Re: Again : Including other files
Hi Rajeev, it is the approach of perl4: without modules, You can use this but it will be better for you if created a module (or modules) from the included file and use that module. the performance difference is neglectable compared to the runtime of a script. see perldoc perlmod -- Gabor Rajeev Rumale wrote: Hi, I have a similar situation in my project. I have created a file like mylib.pl and I put all my subroutines into it. In every page which I use i just add a line require mylib.pl IT works fine for me. I would like to know 1. if this approch is Good 2. Is their any performance problem compared to writing the subs directly in main. 3. Is there any better approch. with regards Rajeev Rumale -- Gabor Szabo http://www.tracert.com/ Web backend development Phone: +972-(0)54-624648
Re: use strict errors?
That's good. I thought that's what the error was. The list must finally be teaching me something. Curtis Poe [EMAIL PROTECTED] 06/28/01 03:07PM --- RDWest Sr. [EMAIL PROTECTED] wrote: hi yall, maybe i been up too long... i'm confused with this...script works fine but returns errors with use strict... could someone plz explain what i'm doing wrong? tx 'use strict' will, amongst other things, force you to predeclare all variables (well, almost all) that you use before you actually use them. For example: #!/usr/bin/perl use strict; use CGI qw/:standard/; $username = param( 'username' ); That will not compile because you have attempted to assign a value to $username without declaring it. To get around this: my $username = param( 'username' ); Or: my $username; $username = param( 'username' ); Why do this? A couple of weeks ago, I was working on a 2,000 line program that someone else wrote, but they didn't use strict. It took me over half an hour to figure out that one of the variable names had been misspelled on one of the lines. Had the 'strict' pragma been used, the program would not even have compiled. It would instantly have told me that the misspelled variable wasn't declared and I could have gone it to fix it. Unfortunately, once programs get that large, retro-fitting them to use strict is very difficult. I thought about fixing up your code, but it has some serious problems. You have borrowed some very, very broken form-handling code from some book or Web site. For a thorough explanation of why that code is broken, read http://www.easystreet.com/~ovid/cgi_course/lesson_two/lesson_two.html. I'd summarize the details for you, but there are so many problems with that code that I felt a link was more appropriate. Please don't take any of this personally. I realize that you are new to Perl and I'm just hoping to point you in the right direction. Cheers, Curtis Poe = Senior Programmer Onsite! Technology (http://www.onsitetech.com/) Ovid on http://www.perlmonks.org/ __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
split function question
I need a little help with the split function. I'm trying to split a line based on comma delimeters(,), but when I use the syntax below I don't get the results I expect. What am I doing wrong? Is there a an special escape sequence for a comma? my @asLine = split (/,/, $_); Thanks _ Get your FREE download of MSN Explorer at http://explorer.msn.com
Re: split function question
--- Brian Bukeavich [EMAIL PROTECTED] wrote: I need a little help with the split function. I'm trying to split a line based on comma delimeters(,), but when I use the syntax below I don't get the results I expect. What am I doing wrong? Is there a an special escape sequence for a comma? my @asLine = split (/,/, $_); Just a quick guess, but much of the comma-delimited data that I see has quoted fields that have commas embedded in the quotes: Poe, Curtis, 34, Aspiring Screenwriter, Programmer Trying to split the above line on commas will result in five fields instead of three. You should probably use a module like Text::CSV or something similar. If you show us some sample input, expected output, and actual output, we can offer better advice. Cheers, Curtis Poe = Senior Programmer Onsite! Technology (http://www.onsitetech.com/) Ovid on http://www.perlmonks.org/ __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: split function question
perl -e 'print Enter your values as 1,2,3...:;
$_=;
chomp;
my @asLine=split (/,/, $_);
foreach (@asLine) {
print asLine[.$i++.]=$_\n;
}'
You may want to see what you have
print $_\n
for example just before you try the split ...
-Original Message-
From: Brian Bukeavich [mailto:[EMAIL PROTECTED]]
Sent: June 28, 2001 15:38
To: [EMAIL PROTECTED]
Subject: split function question
I need a little help with the split function. I'm trying to split a line
based on comma delimeters(,), but when I use the syntax below I don't get
the results I expect. What am I doing wrong? Is there a an special escape
sequence for a comma?
my @asLine = split (/,/, $_);
Thanks
_
Get your FREE download of MSN Explorer at http://explorer.msn.com
Re: Streaming mp3
* John Edwards ([EMAIL PROTECTED]) [28 Jun 2001 14:35]: Hi. I'm writing some cgi to process an input (passed via URL encoding on the end of the URL) and return to the browser the selected mp3, streamed. I've got some code that generates a m3u file, with the URL to the right mp3, writes that m3u to the disk on the server and redirects the browser to the m3u. This should then connect back to the server and stream the mp3. [...] Just downloading the mp3 isn't what winamp and so on do. See http://www.perldoc.com/cpan/Apache/MP3.html -- iain. http://eh.org/~koschei/
hidden field value not getting set
Below is code to generate one or two forms...
When both forms are generated the hidden value for the second form is not
getting replaced with the correct value...
Does anyone see a problem with this code ?
Thanks in advance ...
print $q-p($q-center(
Items from $REQUEST{START} to $displayed of $REQUEST{END} items));
# -- values OK here !
exit if $REQUEST{END} = $max_lines;# No Previous or Next
# Display previous next buttons when appropriate
my $span = 9;
my %buttons = ();
if ($REQUEST{START} 1) {
$span = 6;
$buttons{'1'}
= [($REQUEST{START},Previous $REQUEST{START}
Items,'prev')];
}
# are there more to display ?
if ($REQUEST{START} $REQUEST{END}) {
$span -=3;
$displayed++;
$buttons{'2'}
= [($displayed,Next $displayed Items,'next')];
}
$row = '';
foreach (sort keys %buttons) {
$row .= $q-td({-align='CENTER',-colspan=$span},
$q-start_form(-name=$buttons{$_}[2]),
$q-submit(-name=$buttons{$_}[1]),\n,
$q-hidden(-name='ACCT',
-value=$REQUEST{ACCT}),\n,
$q-hidden(-name='CUST_ID',
-value=$REQUEST{CUST_ID}),\n,
$q-hidden(-name='TITLE',
-value=$REQUEST{TITLE}),\n,
$q-hidden(-name='ACTIVE',
-value=$REQUEST{ACTIVE}),\n,
$q-hidden(-name='START',
-value=$buttons{$_}[0]),\n, # Problem ?
$q-hidden(-name='END',
-value=$REQUEST{END}),\n,
$q-hidden(-name='INITIAL',
-value='NO'),\n,
'/FORM');
}
generates ...
center
Items from 11 to 20 of 69 items
/center
/p
table size=80% align=CENTER
tr
td align=CENTER colspan=3
form method=post
action=/ITP_Billing/cgi-bin/search_accounts.cgi
enctype=application/x-www-form-urlencoded name=prev
input type=submit name=Previous 11 Items
value=Previous 11 Items /
input type=hidden name=ACCT value= /
input type=hidden name=CUST_ID value=14 /
input type=hidden name=TITLE value= /
input type=hidden name=ACTIVE value=Active
/
input type=hidden name=START value=11 /
input type=hidden name=END value=69 /
input type=hidden name=INITIAL value=NO /
/FORM
/td
td align=CENTER colspan=3
form method=post
action=/ITP_Billing/cgi-bin/search_accounts.cgi
enctype=application/x-www-form-urlencoded name=next
input type=submit name=Next 21 Items
value=Next 21 Items /
input type=hidden name=ACCT value= /
input type=hidden name=CUST_ID value=14 /
input type=hidden name=TITLE value= /
input type=hidden name=ACTIVE value=Active
/
input type=hidden name=START value=11 /
input type=hidden name=END value=69 /
input type=hidden name=INITIAL value=NO /
/FORM
/td
/tr
/table
Re: Perl Boilerplate???
At 09:24 AM 6/28/01 -0500, David Simcik wrote: Hey, I, like the rest of you, am always looking for ways to make my life more convenient. Especially when coding. To this end, I am looking to fashion a well-rounded template doc that I can use in Homesite (where I do most of my work right now) made up of the essential pieces I'd expect to work with in Perl and with a strong layout. I have trolled through most of the better Perl books out there (Camel, Cookbook, Effective Perl, CGI Programming), but have yet to find an example template outlined succintly (aside from the VERY basic). So the question is, if anybody else does this (I'd be shocked if no one did), what do YOUR templates looks like? What are some of the idiomatically most important elements that should be included??? I think that beyond #!/usr/bin/perl -w use strict; you'd find contention about what to include... and some people will argue about the -w. Were you looking for something like #!/usr/bin/perl -w use strict; use CGI qw(:all); use CGI::Carp qw(fatalsToBrowser); No, wait, some people will argue about the last line as well. Maybe this is why you haven't found any examples :-) -- Peter Scott Pacific Systems Design Technologies http://www.perldebugged.com
Perl Boilerplate???
Hey, I, like the rest of you, am always looking for ways to make my life more convenient. Especially when coding. To this end, I am looking to fashion a well-rounded template doc that I can use in Homesite (where I do most of my work right now) made up of the essential pieces I'd expect to work with in Perl and with a strong layout. I have trolled through most of the better Perl books out there (Camel, Cookbook, Effective Perl, CGI Programming), but have yet to find an example template outlined succintly (aside from the VERY basic). So the question is, if anybody else does this (I'd be shocked if no one did), what do YOUR templates looks like? What are some of the idiomatically most important elements that should be included??? Regards, DTS
Code Review Needed!
I would greatly appreciate ANY feedback anyone could provide. The following page will provide details and a link to download the tarball. http://www.redsquirreldesign.com/soapbox TIA = Dave Hoover Twice blessed is help unlooked for. --Tolkien http://www.redsquirreldesign.com/dave __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
Clear screen
Hi all, I used this instruction to clear the screen on NT system(cls); print Hello; the same instruction is not working on unix. I modified the instruction to system(clear); print hello; This works fine on unix. Is there any instruction in perl to perfom clear screen and it works on both windows and Unix Thanks in advance, jaya K. _ Get Free Fast Easy email from indiya.com: SIGNUP NOW : http://www.indiya.com
Re: Clear screen
I used this instruction to clear the screen on NT
system(cls);
print Hello;
the same instruction is not working on unix. I modified the
instruction to
system(clear);
print hello;
This works fine on unix. Is there any instruction in perl to perfom
clear screen and it works on both windows and Unix
Thanks in advance,
Would this:
clear;
assuming an earlier:
sub clear { system($^O =~ 'win' ? 'clear':'clr') }
be ok?
A more general solution for this sort of problem
(portable standard utilities) is to use Perl Power Tools:
http://language.perl.com/ppt/
but they haven't (yet?) been nicely bundled on cpan.
Re: Converting Unix paths to windows
On Wed, 27 Jun 2001, Daryl Hoyt [EMAIL PROTECTED] wrote, Hi, I am writing a script to be used on Windows and many different flavors of Unix. I am looking for a good way to convert Unix paths to Windows. Any Ideas? use File::Spec; I know your question is about converting. But I offer you portability so you don't need to convert anything and create two (or more) scripts for two (or more) different systems. Besides, as long as unix2windows *path* is concerned, Perl in Windows treats / correctly, except perhaps the C: drive notation. __END__ -- s::a::n-http(www.trabas.com)
Re: Best practice for config file use?
On Wed, 27 Jun 2001, Michael Fowler [EMAIL PROTECTED] wrote, On Wed, Jun 27, 2001 at 06:58:37PM +0200, Jos I. Boumans wrote: I usually use a config file for this now you could do this 3 ways as i see it -just have a file that holds a lot of global vars and 'require/use' that in your mian script -get one hashref that you globalise and thus reduce namespace pollution -make it a module, give it a constructor returning a hashref and thus not polluting *anything* There are other methods for getting configuration information from an external file. 4) Parse some specific configuration file format, and then provide access to the data from it via a hash or object. There are various modules available on CPAN for this (http://www.cpan.org/modules/00modlist.long.html#ID12_Option_Arg). 5) Parse a file written in Perl, that sets a lot of global variables, into a hash, such as what Parse::PerlConfig (by yours truly) does (http://www.cpan.org/authors/id/M/MF/MFOWLER/Parse-PerlConfig-0.05.tar.gz). Additionally, 6). Use XML to build more complex configuration. 7). do()-ing the file instead of require()-ing it. __END__ -- s::a::n-http(www.trabas.com)
Re-Mailer
Hello, Adam Theo here; does anyone know of a script to 're-mail' emails? i have a bunch of 'saved' and 'archived' emails (in both Mozilla Inbox and RMAIL formats) stored on my local computer. i am looking for a script that will read these files, then re-send them to email accounts i specify, preserving sender, subject, and especially date intact. if no-one knows of such a script, could they direct me to any modules they think will help? and also, does anyone know anything about the RMAIL format? such as how i could get perl to read that, or just as good, some other program that will convery it into a format that can be managed by an existing perl module/script for this sort of thing. thanks. -- /\ Theoretic Solutions (www.Theoretic.com): //\\'Activism, Software, and Internet Services' //--\\ Personal Homepage (www.Theoretic.com/adamtheo/): ][ 'Personal history, analysis, and favorites' ][ Birthright Online (www.Birthright.net): 'Keeping the best role-playing game alive' Email Jabber: Other: -Professional: [EMAIL PROTECTED] -AIM: AdamTheo2000 -General: [EMAIL PROTECTED] -ICQ: 3617307 -Personal: [EMAIL PROTECTED] -Phone: (850)8936047
Re: Clear screen
On Wed, 27 Jun 2001, jaya kumaran [EMAIL PROTECTED] wrote,
Hi all,
I used this instruction to clear the screen on NT
system(cls);
print Hello;
the same instruction is not working on unix. I modified the instruction to
system(clear);
print hello;
This works fine on unix. Is there any instruction in perl to perfom clear
screen and it works on both windows and Unix
First of all, if you're thinking about portable code, your first
resource to read will be the perlport manual page. As said there,
nearly all Perl is already portable (one strategy is to emulate
missing functions for some poor system).
There will be a point that you really need to code in different ways
for different systems. And you need the $^O special variable to
inspect the OS the script is running under. Additionally, if you're
going to use this a lot, you better save the clear character in the
variable and print it later many times.
my $clear;
if ($^O =~ /mswin/i || $^O =~ /dos/i) {
$clear = `cls`;
} elsif ($^O eq 'linux') {
$clear = `clear`;
}
# add other checking here to support more systems
# (this is of course not a complete way for all needs)
Other strategy is by evaluating the expression to see if the function
is supported in the particular system.
eval {
is_this_function_supported();
};
die $@ if $@; # or you can just skip the function
# and let the program continues
More in 'perldoc -f eval' on this.
__END__
--
s::a::n-http(www.trabas.com)
Populating string (scalar)
Hi I need to assign a long multiline string value to a scalar. I would like to know a way where i can assing a string value to a scalar with inserting the escape char(\). something similar to what we do with print print label; .title $title./title. .. label Here we need not escape the / char in /title; Can we use any similar method to assing a value to any scalar, Sorry if I am asking a stupid question. with regards Rajeev Rumale ~~~ Rajeev Rumale MyAngel.Net Pte Ltd.,Phone : (65)8831530 (office) #04-01, 180 B, The Bencoolen, Email : [EMAIL PROTECTED] Bencoolen Street, Singapore - 189648 ICQ: 121001541 Website : www.myangel.net ~~~ - Original Message - From: Nick Transier [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, June 27, 2001 10:50 PM Subject: Incrementing Strings If I define a variable as a string my $var = a; I can get the increment to work print ++$var; -- prints b but the decrement print --$var -- prints -1 Why? and how can I decrement it? Thanks, -Nick _ Get your FREE download of MSN Explorer at http://explorer.msn.com
Re: Populating string (scalar)
On Thu, Jun 28, 2001 at 04:42:08PM +0800, Rajeev Rumale wrote: Hi I need to assign a long multiline string value to a scalar. I would like to know a way where i can assing a string value to a scalar with inserting the escape char(\). something similar to what we do with print print label; .title $title./title. .. label How about my $var = label; .title $title./title. .. label :-) -- Paul Johnson - [EMAIL PROTECTED] http://www.pjcj.net
system - rsh problem
Hi,
I try to execute the following line on Solaris:
system (rsh,btzp17,`/usr/local/bin/perl -e foreach $line
(@allfiles) { print $line;}`) ;
@allfiles is a list of pathnames and files
The lines should be printed via a rsh on a station called btzp17.
If I execute
rsh btzp17 /usr/local/bin/perl -e 'foreach $line (@allfiles) { print
$line ;}'
at the command line it works.
From within the script it doesn't work. I receive the following error:
Bareword found where operator expected at -e line 1, near /var/adm
(Missing operator before adm?)
syntax error at -e line 1, near /var/adm
Execution of -e aborted due to compilation errors.
(The /var/adm is expanded from @allfiles)
Thanks for any help,
Stefan.
Input redirection
Hi, I need the o/p of perl -v to be redirected to a file test.txt open(FILEHANDLE, test.txt) || die can't open the file; print FILEHANDLE perl -v ; one executing this , I get the following error Unrecognized file test: -v at D:\test\perl\TEST1.PL line 6. How to write the o/p of 'perl -v' in the file(test.txt). Thanks in advance, jaya _ Get Free Fast Easy email from indiya.com: SIGNUP NOW : http://www.indiya.com
RE: Input redirection
You could print the verion like this open(FILEHANDLE,test.txt) or die Can't open the file: $!; print FILEHANDLE $]\n; # $] is the special variable that holds the running version of Perl close FILEHANDLE; or if you really want the output of perl -v $returned = `perl -v`; open(FILEHANDLE,test.txt) or die Can't open the file: $!; print FILEHANDLE $returned\n; close FILEHANDLE; HTH John -Original Message- From: jaya kumaran [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 11:16 To: [EMAIL PROTECTED] Subject: Input redirection Hi, I need the o/p of perl -v to be redirected to a file test.txt open(FILEHANDLE, test.txt) || die can't open the file; print FILEHANDLE perl -v ; one executing this , I get the following error Unrecognized file test: -v at D:\test\perl\TEST1.PL line 6. How to write the o/p of 'perl -v' in the file(test.txt). Thanks in advance, jaya _ Get Free Fast Easy email from indiya.com: SIGNUP NOW : http://www.indiya.com --Confidentiality--. This E-mail is confidential. It should not be read, copied, disclosed or used by any person other than the intended recipient. Unauthorised use, disclosure or copying by whatever medium is strictly prohibited and may be unlawful. If you have received this E-mail in error please contact the sender immediately and delete the E-mail from your system.
Re: Input redirection
On Thu, 28 Jun 2001, jaya kumaran [EMAIL PROTECTED] wrote, Hi, I need the o/p of perl -v to be redirected to a file test.txt open(FILEHANDLE, test.txt) || die can't open the file; ^ | I hope this is just a typo, you missed the opening double-quote. But you need to include $! as well so you know exactly the reason when the open() fails. print FILEHANDLE perl -v ; one executing this , I get the following error Unrecognized file test: -v at D:\test\perl\TEST1.PL line 6. How to write the o/p of 'perl -v' in the file(test.txt). You must treat 'perl -v' as shell command by enclosing it in the backticks to get the output, print FILEHANDLE `perl -v`; More on this is in the Quote and Quote-like Operators entry in perlop manpage. Otherwise, bare '-v' will be treated as file test operator. Perl has a plenty of file test operator in this form, -f to test if the argument is a file, -d if a directory, -s to get the size, etc. perldoc -f -X for more on this. Anyway, is it really hard to do, perl -v test.txt from the command line? __END__ -- s::a::n-http(www.trabas.com)
Re: Running PERL as root
Cobalt RaQ runs apache as root so that their front-end can run with root perms. You could use cgiwrap for the same effect, i suppose. there is also webmin, which runs with root priveleges. but webmin has its own httpd server coded in perl (thereby reducing the chances of buffer overflows and such) as webmin comes with a BSD style licence, you could cannibalize it for your needs there was a thread on bugtraq about the merits of running apache as root. as apache has a pretty good safety record, you should be able to run apache as root pretty safely. however if you are a little more paranoid, try cgiwrap. BEWARE: the idea of running a CGI script to administrate a server is pretty idiotic, in my opinion. i am trying to code a web based front end for virtual/ip hosting web servers like cobalt's, so i understand the necessity in certain cases. however, it is frightening and goes against all accepted security norms. kk On Wed, Jun 27, 2001 at 11:12:34PM -0400, Bill Pierson wrote: Thanks for your replies. Actually, I'd like to be able to modify system config files, stop and restart daemons, etc. I'm not aware of the different ways to accomplish this; any tips would be appreciated. The server is in a protected environment. --Bill -Original Message- From: Farouk Khawaja [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 27, 2001 10:44 PM To: Bill Pierson; [EMAIL PROTECTED] Subject: Re: Running PERL as root Bill Pierson [EMAIL PROTECTED] wrote: I have a quick question about running a perl program as root via CGI. I would assume it's platform dependant, and in my situation I have Linux Redhat 7.1 w/Apache 1.3.19 webserver. This question is a little off-topic, however I'm guessing that a few of you may have tackled this issue before. Thanks again, --Bill I wouldn't run any CGI script as root, no matter how securly I belive I've written it. What are you trying to do that would require root permission to accomplish? Maybe you can explore alternatives.
Re: substr (help,help,help);
btw, why did you say 4, not 5? 'Login' has 5 characters last time I
looked!
I had a momentary (so I thought) lapse of confusion and applied the offset
rule to the
length (e.g. first character is 0).
grab a copy of that part of the string, then throw it in to the great big
bit void in the sky
That was stupid mistakehello, no clue what I was thinking...
($mybit) = m#/nic/login/([^]*?)#;
This explanation was extremely helpful
Thank you for taking the time explain each of my issues.
Another satisfied customer.thank you again!!
Craig
[EMAIL PROTECTED]
Pager
Numeric: 1-877-895-3558
Email pager: [EMAIL PROTECTED]
--
You will never find time for anything.
If you want time, you must make it.
Charles Buxton
- Original Message -
From: Me [EMAIL PROTECTED]
To: Craig S Monroe [EMAIL PROTECTED]; Beginners@Perl (E-mail)
[EMAIL PROTECTED]
Sent: Wednesday, June 27, 2001 5:45 PM
Subject: Re: substr (help,help,help);
while (SOURCE){
if (m/\/nic\/login/){
this just says yes or no, you have a match or you don't.
m// (and friends like s///) can do more than that for you.
for one thing, they can grab a particular piece of what
they match.
substr ($_,28,4);
what substr normally does -- get or change a piece of
a string -- overlaps what m// and friends can do. if you
are already using m// or friend it's often simpler to use
that to do what substr can do.
in the above case, substr isn't doing anything at all!
you don't set that part of the string to anything, nor do
you set any variable to contain the bit that's grabbed.
you're simply saying, grab a copy of that part of the
string, then throw it in to the great big bit void in the
sky. you could do:
$foo = substr($_, 28, 4);
but, as noted above, it's easier to extend your use of m//.
btw, why did you say 4, not 5? 'Login' has 5 characters
last time I looked!
back to m//. Try this:
($mybit) = m#/nic/login/([^]*?)#;
I used # as the m delimiters so you don't have
to escape the / characters.
the (...) is the bit that grabs something.
the [^] bit means match anything but a character.
the * bit means match any number of non 's.
the ? bit means match as few as still makes the
match true (if possible). (otherwise the grabbed bit
would be the rest of the line up to just before the last
encountered.
javascript-detail
Hi folks, Well, I am actually implementing an LWP::UserAgent to walk through a website and do the things I want it to and get me the desired results(dont worry, this is a noble cause :-) ) and my problem is that there are some javascripts on that webpage which I need to execute thru my perl code.and I have not been able to find a way to do it. I do not have the code for those javascripts, all I know is the way they are called and run on the webpage. Hope this is clear enough. Can anyone come up with any clues now? thanks, Prachi _ Get your FREE download of MSN Explorer at http://explorer.msn.com
RE: javascript-detail
you could try downloading the javascript code from the server. If the code is in external files and added into the page like so script language=JavaScript1.2 src=/code/script.js/script You should be able to download the code by grabing the matching URL. E.g http://servername/code/script.js Running it within Perl is another matter entirely and I have no clue on that... John -Original Message- From: Prachi Shroff [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 14:24 To: [EMAIL PROTECTED] Subject: javascript-detail Hi folks, Well, I am actually implementing an LWP::UserAgent to walk through a website and do the things I want it to and get me the desired results(dont worry, this is a noble cause :-) ) and my problem is that there are some javascripts on that webpage which I need to execute thru my perl code.and I have not been able to find a way to do it. I do not have the code for those javascripts, all I know is the way they are called and run on the webpage. Hope this is clear enough. Can anyone come up with any clues now? thanks, Prachi _ Get your FREE download of MSN Explorer at http://explorer.msn.com --Confidentiality--. This E-mail is confidential. It should not be read, copied, disclosed or used by any person other than the intended recipient. Unauthorised use, disclosure or copying by whatever medium is strictly prohibited and may be unlawful. If you have received this E-mail in error please contact the sender immediately and delete the E-mail from your system.
RE: FW: rmdir
Mike, Still unsure how to approach. Very new to perl and I don't want to screw this up. Any input from you would be great. Thank you. Chris -Original Message- From: Michael Fowler [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 27, 2001 5:27 PM To: Me Cc: Porter, Chris; [EMAIL PROTECTED] Subject: Re: FW: rmdir On Wed, Jun 27, 2001 at 03:51:43PM -0500, Me wrote: Basically, you have to write a sub that does the following sort of thing (ignoring your wrinkle that you don't want to delete all the files in the initial directory): Or you could use File::Path::rmtree. I'm surprised no one has given this answer yet. Michael -- Administrator www.shoebox.net Programmer, System Administrator www.gallanttech.com --
background processing (again?)
Folks, to make a long story short I have a req to-do the following. 1) gather continues data from netstat -I hme0 $SLEEPTIME $netstatTMPFILE while still parsing other information/data etc.. that is, the script needs to be bale to collect the netstat data while it is running other process, not just fork netstat and wait for it to die/return. it will never die/return unless it is killed. Regards, Ron
Re: background processing (again?)
On Thu, 28 Jun 2001, Ronald J. Yacketta wrote: Folks, to make a long story short I have a req to-do the following. 1) gather continues data from netstat -I hme0 $SLEEPTIME $netstatTMPFILE while still parsing other information/data etc.. that is, the script needs to be bale to collect the netstat data while it is running other process, not just fork netstat and wait for it to die/return. it will never die/return unless it is killed. Try something like this: open NETSTAT, netstat -I hme0 $SLEEPTIME | or die Can't start netstat: $!\n; Then, just read from the NETSTAT filehandle. For more information, look at 'open' and 'sysopen' in the Camel book. Also, you may want to consider using 'select' if you don't want to block on reads. (Be sure you look at the 'ready file descriptors' version of 'select'). - D [EMAIL PROTECTED]
Re: arrays
I'm a learner myself, but here is a quick guess:
open(IN,/etc/httpd/conf/httpd.conf) || die $!;
@conf = IN;
close(IN);
foreach (@conf) {
if ($_ =~ /ServerName (.*)/i) {
push (@servers,$1);
}
}
print @servers\n;
You may also need to put in a exclusion for the main servername directive at
the beginning of the conf file if you don't want that included in your list.
This example also assumes that there is only 1 space between the server name
and the actual server name.
Hope this helps,
--Bill
- Original Message -
From: Tyler Longren [EMAIL PROTECTED]
To: Perl Beginners [EMAIL PROTECTED]
Sent: Thursday, June 28, 2001 9:44 AM
Subject: arrays
Hello everyone,
I'm just starting perl. I want to search through httpd.conf and get the
ServerName from each virtual host.
Ex:
VirtualHost *
DocumentRoot /home2/ploo.net/www
ServerName www.ploo.net
CustomLog /home2/ploo.net/logs/access_log
ErrorLog /home2/ploo.net/logs/error_log
TransferLog /home2/ploo.net/logs/transfer_log
ScriptAlias /cgi-bin/ /home2/ploo.net/cgi-bin/
/VirtualHost
VirtualHost *
DocumentRoot /home2/test.net/www
ServerName www.test.net
CustomLog /home2/test.net/logs/access_log
ErrorLog /home2/test.net/logs/error_log
TransferLog /home2/test.net/logs/transfer_log
ScriptAlias /cgi-bin/ /home2/test.net/cgi-bin/
/VirtualHost
Could I get the ServerName values put into an array so I can do something
with each different ServerName? Thank you everyone.
Tyler
Re: arrays
Tyler wrote:
Hello everyone,
I'm just starting perl. I want to search through
httpd.conf and get the
ServerName from each virtual host.
Ex:
VirtualHost *
DocumentRoot /home2/ploo.net/www
ServerName www.ploo.net
CustomLog /home2/ploo.net/logs/access_log
ErrorLog /home2/ploo.net/logs/error_log
TransferLog
/home2/ploo.net/logs/transfer_log
ScriptAlias /cgi-bin/
/home2/ploo.net/cgi-bin/
/VirtualHost
VirtualHost *
DocumentRoot /home2/test.net/www
ServerName www.test.net
CustomLog /home2/test.net/logs/access_log
ErrorLog /home2/test.net/logs/error_log
TransferLog
/home2/test.net/logs/transfer_log
ScriptAlias /cgi-bin/
/home2/test.net/cgi-bin/
/VirtualHost
Could I get the ServerName values put into an array
so I can do something
with each different ServerName? Thank you everyone.
Tyler
Try this:
-
open(FILE, httpd.conf);
while (FILE) {
push(@server_names, $1) if /ServerName\s+(.*)/
}
close FILE;
-
Now the array @server_names holds the values you want.
HTH
=
Dave Hoover
Twice blessed is help unlooked for. --Tolkien
http://www.redsquirreldesign.com/dave
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Re: arrays
Thank you everyone. All of you have been a great help. That is exactly
what I need. I'll figure out how to get just the servernames from the
VirtualHosts myself (I'll try anyway) ;-)
Thanks!
Tyler
- Original Message -
From: Brett W. McCoy [EMAIL PROTECTED]
To: Tyler Longren [EMAIL PROTECTED]
Cc: Perl Beginners [EMAIL PROTECTED]
Sent: Thursday, June 28, 2001 9:18 AM
Subject: Re: arrays
On Thu, 28 Jun 2001, Tyler Longren wrote:
I'm just starting perl. I want to search through httpd.conf and get the
ServerName from each virtual host.
Sure:
open(APACHE_CONF, httpd.conf) or die Could not open Apache config file:
$!\n;
my @servernames;
while(APACHE_CONF) {
if(/^ServerName\s(.*)$/i) {
push @servernames, $1;
}
}
close(APACHE_CONF);
-- Brett
http://www.chapelperilous.net/btfwk/
Tuesday After Lunch is the cosmic time of the week.
die / exit / style question
Hi folks,
I have a couple of doubts/questions about the usage of above functions:
1. will those three always work the same ( I have troubles understanding the
'die' description in Llama book ( $!, $?8, the status of the last reaped
child from a system, wait, close on a pipe, or `command`))?:
if ( ( $reqrec-fillServ($ServRef) ) == undef ) {
print fillRec failed! \n;
exit;
}
if ( ( $reqrec-fillServ($ServRef) ) == undef ) {
die fillRec failed! \n;
}
$reqrec-fillServ($ServRef) or die fillServ failed;
In fillServ function, I use 'return;' upon failure and 'return 1;' if
everything is OK.
2. is it a matter of style to use 'not defined(_expression_)' or
(_expression_) == undef? I get warnings in the second case..
Will defined cover also an empty string?
Any comments will be greatly appreciated, as it is my first bigger program
in Perl and I would like it to work flawless...
Ela
Works, but can it be better?
Greetings,
The following script queiries the status of NT services. My question is
there a way to directly query the @servicenames{name} and get the value of a
sub key in that hash? Now I search all {name} keys and continue from there.
Also, how can I get rid of blank line feeds in the input file? The format
is:
Server:Service
If I have more than one \n after the last entry, it tries to test for them!
Thanks,
Bradley
use strict;
use diagnostics;
use Win32::Lanman;
use vars qw(@status %status @servicenames $server $myservice $service);
#Translate error codes to text.
push ( @status, qw(7 Paused 4 Started 3 Stopping 2 Starting 1 Stopped) );
%status = @status;
#Load server/services to be queried.
open( LIST, c:\\test\\SerSvs.txt );
while (LIST) {
chomp;
( $server, $myservice ) = split (/:/);
if
( !Win32::Lanman::EnumServicesStatus( $server, ,
SERVICE_WIN32,
SERVICE_STATE_ALL, \@servicenames ) )
{
print Sorry, something went wrong connecting to $server; error: ;
# get the error code
print Win32::Lanman::GetLastError () . \n;
}
for $service(@servicenames) {
if ( ${$service}{name} eq $myservice ) {
print $server ${$service}{name}\n;
print Status $status{${$service}{state}}\n;
}
}
}
close LIST
Re: die / exit / style question
On Jun 28, Ela Jarecka said:
if ( ( $reqrec-fillServ($ServRef) ) == undef ) {
print fillRec failed! \n;
exit;
}
This prints a message to STDOUT (or the currently select()ed handle), and
exits the program with an error code of 0.
Testing for equality with undef is a mistake.
if ( ( $reqrec-fillServ($ServRef) ) == undef ) {
die fillRec failed! \n;
}
This prints a message to STDERR (or gets caught by $SIG{__DIE__} first),
and exits the program with a NON-ZERO error code (signifying that the
program terminated abnormally).
Testing for equality with undef is (still) a mistake.
$reqrec-fillServ($ServRef) or die fillServ failed;
This is good.
In fillServ function, I use 'return;' upon failure and 'return 1;' if
everything is OK.
You should not test for equality with undef, because undef becomes NOT
undef when used in any context.
print 2 + undef; # becomes 2 + 0, albeit with a warning
print hi . undef; # becomes hi . , albeit with a warning
if ($x == undef) {
# you get here if $x is 0, '', or undef
}
if ($x eq undef) {
# you get here if $x is '' or undef
}
Instead, use the defined() approach:
if (not defined $x) {
# $x can ONLY have the value of undef if it gets here
}
However, you can treat undef as false (since it is) in a boolean
expression:
# this IS a silly way to write this function, but nevermind
sub large_number {
return if $_[0] 1_000_000;
return 1;
}
if (large_number($foo)) {
# it's big if it got here
}
You don't need to test for == 1 or == undef or defined(...), because 1 is
true, and undef is false.
--
Jeff japhy Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
I am Marillion, the wielder of Ringril, known as Hesinaur, the Winter-Sun.
Are you a Monk? http://www.perlmonks.com/ http://forums.perlguru.com/
Perl Programmer at RiskMetrics Group, Inc. http://www.riskmetrics.com/
Acacia Fraternity, Rensselaer Chapter. Brother #734
** Manning Publications, Co, is publishing my Perl Regex book **
Re: arrays
One more quick question. How can I count the values in an array
(@servernames)?
I want to print my servernames seperately:
$i=0;
while ($i = $num_servers) {
print $servernames[$i]\n;
}
Something like that (I don't know if that will even work in perl...but it
does in PHP).
Thanks!
Tyler
- Original Message -
From: Brett W. McCoy [EMAIL PROTECTED]
To: Tyler Longren [EMAIL PROTECTED]
Cc: Perl Beginners [EMAIL PROTECTED]
Sent: Thursday, June 28, 2001 9:18 AM
Subject: Re: arrays
On Thu, 28 Jun 2001, Tyler Longren wrote:
I'm just starting perl. I want to search through httpd.conf and get the
ServerName from each virtual host.
Sure:
open(APACHE_CONF, httpd.conf) or die Could not open Apache config file:
$!\n;
my @servernames;
while(APACHE_CONF) {
if(/^ServerName\s(.*)$/i) {
push @servernames, $1;
}
}
close(APACHE_CONF);
-- Brett
http://www.chapelperilous.net/btfwk/
Tuesday After Lunch is the cosmic time of the week.
RE: Gzip on Win32
For a great free Unix-like command line interface for Win32, install Cygwin. It gives you many of the Gnu tools (including gzip) in its original install, and you can install others (such as Perl). Look at http://www.xav.com/perl/lib/Pod/perlcygwin.html. -jim -Original Message- From: David Simcik [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 11:05 AM To: Perl Beginners Subject: Gzip on Win32 Hey, I'm hoping this will be a straighforward question...I'm assuming I need a command-line interface GZip utility to work with the MCPAN installation utility??? Where can I find one? Thanks. DTS
RE: delete the last string
I want to delete a string but only the last. You could search backwards in the string and remove the first occurrence I do not have the details on doing this, but from reading the master regex book, it can be done I am sure others with more perl exp can cough up an example or two.. -Ron
Re: arrays
On Thu, 28 Jun 2001, Tyler Longren wrote:
One more quick question. How can I count the values in an array
(@servernames)?
I want to print my servernames seperately:
my $server_count = @servernames;
An array used in a scalar context returns the number of elements in the
array.
or you could do
foreach my $i (0..$#servernames) {
print $servernames[$i]\n;
}
$#array returns the index of the last element, which is usually the number
of elements - 1.
-- Brett
http://www.chapelperilous.net/btfwk/
I'm not stupid, I'm not expendable, and I'M NOT GOING!
deleting a line with a particular string.
--- I have a file having 100 lines. I want to remove the lines, having a particular string, completely from the file. (notreplacing them with blank lines even) Is there a way in perl for doing this ? --deepesh
Re: delete the last string
Reverse the string, reverse the pattern, do the substitue, reverse the string again. the string is I am the titi last human on titi earth. the pattern is /titi/ so reverse the string (with reverse in a scalar context): .htrae itit no namuh tsal itit eht ma I reverse the pattern /itit/ do the substitute reverse the string again to make it normal again. code #!/usr/bin/perl -w use strict; my $str = I am the titi last human on titi earth.; my $rev = reverse $str; $rev =~ s/itit//; $str = reverse $rev; print $str\n; /code On 28 Jun 2001 16:58:03 +0200, Stéphane JEAN BAPTISTE wrote: Hi I want to delete a string but only the last. Example/ I am the titi last human on titi earth. - I want to erase the last titi nut not the other. How can I do this thanks -- Today is Prickle-Prickle, the 33rd day of Confusion in the YOLD 3167 Or is it?
Re: delete the last string
An important note: Be very careful when reversing the regexp /$* / is not the reverse of / *$/ (/^ */ is). On 28 Jun 2001 11:14:58 -0400, Chas Owens wrote: Reverse the string, reverse the pattern, do the substitue, reverse the string again. the string is I am the titi last human on titi earth. the pattern is /titi/ so reverse the string (with reverse in a scalar context): .htrae itit no namuh tsal itit eht ma I reverse the pattern /itit/ do the substitute reverse the string again to make it normal again. code #!/usr/bin/perl -w use strict; my $str = I am the titi last human on titi earth.; my $rev = reverse $str; $rev =~ s/itit//; $str = reverse $rev; print $str\n; /code On 28 Jun 2001 16:58:03 +0200, Stéphane JEAN BAPTISTE wrote: Hi I want to delete a string but only the last. Example/ I am the titi last human on titi earth. - I want to erase the last titi nut not the other. How can I do this thanks -- Today is Prickle-Prickle, the 33rd day of Confusion in the YOLD 3167 Or is it? -- Today is Prickle-Prickle, the 33rd day of Confusion in the YOLD 3167 Keep the Lasagna flying!
RE: deleting a line with a particular string.
I have a file having 100 lines. I want to remove the lines, having a particular string, completely from the file. (not replacing them with blank lines even) Is there a way in perl for doing this ? most defiantly, tho I am a novice at perl right now. I have sent this to the beginners list to get more help. -Ron
Hash of arrays
Hi All,
I just wonder why the if condition is always true regardless of the value of the array
AB.
@AB = [1,2], and $i gets printed even for values not inlcuded in array AB.
foreach $i ( 0 .. $#{ $testsec{'AB'} } ) {
if ($testsec{'AB'}[$i] = 6543){ # always true
print $i\n;
}
else { last ;}
print $testsec{'AB'}[$i]\n;
}
}
I appreciate if someone can help.
I.S
__
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Screen refresh
Hello, I would like to know of a way to refresh a console screen, opposed to just augmenting the console text. This would help greatly in making simple menus. --Sebastian Lisic
Re: Hash of arrays
--- F.H [EMAIL PROTECTED] wrote:
I just wonder why the if condition is always true regardless of the
value of the array AB.
if ($testsec{'AB'}[$i] = 6543){ # always true
Because = is an assignment. =o)
print foo if $x = 65343;
will always print, because = returns the 6543 assigned, which is true.
Try == instead. ;o]
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Re: arrays
Tyler wrote:
One more quick question. How can I count the values
in an array
(@servernames)?
I want to print my servernames seperately:
[snip]
Tyler,
To get a numeric count of the elements in
@servernames, do this:
$count = @servernames; # count now equals the number
of elements in @servernames
To print out each of the elements, do this:
foreach $name (@servernames) {
print $name\n;
}
Another way to do the above is this:
for (@servernames) {
print $_\n; # when no placeholder variable is
specified, by default the $_ variable is used
}
HTH,
=
Dave Hoover
Twice blessed is help unlooked for. --Tolkien
http://www.redsquirreldesign.com/dave
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Fork (not the kind you eat with)
The one thing in perl that gets my head all confused is fork. Can someone point me in the right direction (be it book, website, or kind enough to offer code). I need to make a script that has to check 16000 servers in around 6 minutes. My rough maths works out that 44 checks a second are needed. Each server check takes about 0.5 seconds to return, so the best bet is to fork each individual check, the result of which gets added to mysql so no need to have a conversation going on between child and parent. Idealy i would like to control the max amount children i have to, say, around 50. Any help would be greatful. (I have the cook book open but only seems to talk about a single parent child pair..?!) Pierre.
referencing a flat file DB
Hello everyone,
I am trying to create a simple cgi script that if a user enters the
correct information on a contest form, they are entered into a flat-file DB.
This I have conquered. My next feat is that before I write their personal
information into the DB, I am comparing 3 fields from the DB to 3 fields
being submitted by the user for duplicate submissions in sub one_time (the
fields are phone number fields). The problem is, is that I never get a
match and the user is able to submit an infinite amount of time. Here is my
source code. It's only about 65 lines. Thank you for your help!
Jon Riddle
Interactive Gallery Inc.
Phone- 818-501-4486 ext. 3037
Email- [EMAIL PROTECTED]
The three great virtues of a programmer are
laziness, impatience and hubris.
Larry Wall
#!/usr/local/bin/perl -w
use CGI;
use CGI::Carp qw(carpout fatalsToBrowser);
$Q = CGI;
$content_length = $ENV{'CONTENT_LENGTH'};
read (STDIN, $posted_information, $content_length);
$posted_information =~ s/%([\dA-Fa-f][\dA-Fa-f])/pack (C, hex ($1))/eg;
$posted_information =~ s/\+/ /g;
@fields = split (//, $posted_information);
($label, $name) = split (/=/, $fields[0]);
($label, $street) = split (/=/, $fields[1]);
($label, $city) = split (/=/, $fields[2]);
($label, $state) = split (/=/, $fields[3]);
($label, $zip) = split (/=/, $fields[4]);
($label, $PHONE_AREA) = split (/=/, $fields[5]);
($label, $PHONE_PRE) = split (/=/, $fields[6]);
($label, $PHONE_SUFF) = split (/=/, $fields[7]);
($label, $serviceProvider) = split (/=/, $fields[8]);
($label, $lapDance) = split (/=/, $fields[9]);
($label, $lapDance2) = split (/=/, $fields[10]);
($label, $lapDance3) = split (/=/, $fields[11]);
($label, $lapDance4) = split (/=/, $fields[12]);
($label, $lapDance5) = split (/=/, $fields[13]);
#Compares correct anwsers
$lapResults .= ,$lapDance,$lapDance2,$lapDance3,$lapDance4,$lapDance5;
if ($lapResults eq
,AvaVincent,JessicaDrake,JewellDeNyle,ShaylaLaVeaux,ShaySweet) { $correct
= 1}
if (!$correct) {
print $Q-redirect('http://www.ten.com/contest/thanklost.htm');
}
else {
if (one_time(1)) {
print
$Q-redirect('http://www.ten.com/contest/already.html');
}
else {
open (OUTPUT, lapdance.db) || die Cannot open lapdance.db: $!;
print OUTPUT $name, :, $street, :, $city, :, $state, :,
$zip,:, $PHONE_AREA, :, $PHONE_PRE, :, $PHONE_SUFF,\n;
close OUTPUT;
print $Q-redirect('http://www.ten.com/contest/thankwon.htm');
}
}
# Routine that checks DB for previous valid
# entry comparing telephone number
sub one_time {
open (VARIFY, lapdance.db) || die Cannot open lapdance.db: $!;
while (VARIFY) {
$stats = VARIFY;
$compare = { split (/:/, $stats)};
@records = \$compare;
if (($records[6] eq $PHONE_AREA) ($records[7] eq
$PHONE_PRE) ($records[8] eq $PHONE_SUFF)) {
$sorry = 1;
}
}
close VARIFY;
return $sorry;
}
# EOF ###
Re: simple regex question
--- Mike Ring [EMAIL PROTECTED] wrote: I've learned a bit about regular expressions today. I have a string formatted like CN=foo,OU=bar,O=pah and I need to parse out foo. I have created the following code which does work: $dnvalue =~ m/([^,]*)/; $username = $1; $username =~ s/(CN=)//; print $username However, I'd like to do the match/replace on a single line. Can anyone show me how to combine these statements into a more elegant regular expression? my ($cn) = $dnvalue =~ /^CN=([^,]*),/; The list context provided by the parens around $cn will make the match return the value found. =o) __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
RE: simple regex question
There's no need to match past the CN=, then prepend the CN= back to the string. Use the following $dnvalue = CN=foo,OU=bar,O=pah; $dnvalue =~ /(CN=[A-Za-z0-9]*)/; $username = $1; print $username This looks for CN= followed by any number of letters (upper or lowercase) and numbers. If you don't mind matching on an underscore too (_) use the following instead $dnvalue =~ /(CN=\w*)/; HTH John -Original Message- From: Mike Ring [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 17:17 To: [EMAIL PROTECTED] Subject: simple regex question Hello all. I've learned a bit about regular expressions today. I have a string formatted like CN=foo,OU=bar,O=pah and I need to parse out foo. I have created the following code which does work: $dnvalue =~ m/([^,]*)/; $username = $1; $username =~ s/(CN=)//; print $username However, I'd like to do the match/replace on a single line. Can anyone show me how to combine these statements into a more elegant regular expression? Thanks, Mike --Confidentiality--. This E-mail is confidential. It should not be read, copied, disclosed or used by any person other than the intended recipient. Unauthorised use, disclosure or copying by whatever medium is strictly prohibited and may be unlawful. If you have received this E-mail in error please contact the sender immediately and delete the E-mail from your system.
Re: FW: rmdir
On Thu, Jun 28, 2001 at 09:49:32AM -0400, Porter, Chris wrote: Still unsure how to approach. Very new to perl and I don't want to screw this up. Any input from you would be great. Thank you. -Original Message- From: Michael Fowler [mailto:[EMAIL PROTECTED]] Or you could use File::Path::rmtree. I'm surprised no one has given this answer yet. Your best bet to figuring out how to use File::Path::rmtree is to read perldoc File::Path, or http://www.perldoc.com/perl5.6/lib/File/Path.html. It's all pretty straightforward. Michael -- Administrator www.shoebox.net Programmer, System Administrator www.gallanttech.com --
RE: simple regex question
Sorry. Ignore that. It's 5:30 and home time. What can I say. Use this instead. $dnvalue =~ /CN=(\w*)/; $username = $1; print $username -Original Message- From: John Edwards [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 17:31 To: 'Mike Ring'; [EMAIL PROTECTED] Subject: RE: simple regex question There's no need to match past the CN=, then prepend the CN= back to the string. Use the following $dnvalue = CN=foo,OU=bar,O=pah; $dnvalue =~ /(CN=[A-Za-z0-9]*)/; $username = $1; print $username This looks for CN= followed by any number of letters (upper or lowercase) and numbers. If you don't mind matching on an underscore too (_) use the following instead $dnvalue =~ /(CN=\w*)/; HTH John -Original Message- From: Mike Ring [mailto:[EMAIL PROTECTED]] Sent: 28 June 2001 17:17 To: [EMAIL PROTECTED] Subject: simple regex question Hello all. I've learned a bit about regular expressions today. I have a string formatted like CN=foo,OU=bar,O=pah and I need to parse out foo. I have created the following code which does work: $dnvalue =~ m/([^,]*)/; $username = $1; $username =~ s/(CN=)//; print $username However, I'd like to do the match/replace on a single line. Can anyone show me how to combine these statements into a more elegant regular expression? Thanks, Mike --Confidentiality--. This E-mail is confidential. It should not be read, copied, disclosed or used by any person other than the intended recipient. Unauthorised use, disclosure or copying by whatever medium is strictly prohibited and may be unlawful. If you have received this E-mail in error please contact the sender immediately and delete the E-mail from your system. --Confidentiality--. This E-mail is confidential. It should not be read, copied, disclosed or used by any person other than the intended recipient. Unauthorised use, disclosure or copying by whatever medium is strictly prohibited and may be unlawful. If you have received this E-mail in error please contact the sender immediately and delete the E-mail from your system.
RE: referencing a flat file DB
Hi Jon
Hey, is this a competition to identify lapdancers or something? If so, don't
forget to post the URL up here when you've got it working ;-) (especially
since we now know all the answers)
Anyway, one thing that might be causing problems is these two lines in your
one_time sub
$compare = { split (/:/, $stats)};
@records = \$compare;
I think you'd be better off to use:
@records = split (/:/, $stats)
At the moment you are splitting to a scalar (which I think just puts the
first (or is it the last?) value from that split into the scalar) and then
assigning a reference to that scalar as an array. I'm sure that's not good
for you (and I'm a bit surprised that -w didn't pick it up, or haven't you
tried it from the command line?)
Other than that I can't see anything that should actually stop it working.
It's not the prettiest code I've ever seen though...
Cheers
Mark C
Hello everyone,
I am trying to create a simple cgi script that if a
user enters the
correct information on a contest form, they are entered into
a flat-file DB.
This I have conquered. My next feat is that before I write
their personal
information into the DB, I am comparing 3 fields from the DB
to 3 fields
being submitted by the user for duplicate submissions in sub
one_time (the
fields are phone number fields). The problem is, is that I
never get a
match and the user is able to submit an infinite amount of
time. Here is my
source code. It's only about 65 lines. Thank you for your help!
Re: delete the last string
On Jun 28, Chas Owens said: An important note: Be very careful when reversing the regexp /$* / is not the reverse of / *$/ (/^ */ is). So how can you reverse a regex safely? Try YAPE::Regex::Reverse... ;) Actually, I've not released it yet. But it works quite well: jpinyan@sushi [12:42pm] ~ #614 perl rev-test (?-xism: *$) reversed: (?-imsx:^\n? *) Upon reversing the reversed, we'd get (?-imsx: *\n?\z) which is proper. I've not released it yet because I've not added handlers for ^ and $ under the /m modifier. (?m-isx: *$) [matches abc\ndef \nghi\n] reversed: (?m-isx:^ *) [matches \nihg\n fed\ncba] -- Jeff japhy Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/ I am Marillion, the wielder of Ringril, known as Hesinaur, the Winter-Sun. Are you a Monk? http://www.perlmonks.com/ http://forums.perlguru.com/ Perl Programmer at RiskMetrics Group, Inc. http://www.riskmetrics.com/ Acacia Fraternity, Rensselaer Chapter. Brother #734 ** Manning Publications, Co, is publishing my Perl Regex book **
Re:[OT:style]deleting a line with a particular string.
--- Me [EMAIL PROTECTED] wrote: I have a file having 100 lines. I want to remove the lines, having a particular string, completely from the file. (notreplacing them with blank lines even) Is there a way in perl for doing this ? At a shell prompt / command line, enter: perl -ne '/string/ or print' file where string is the string and file is the file. I prefer 'print unless /string/'. As if it matters. ;o] __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
passing parameters to Perl script
Hello, How can I pass parameters from *nix command line to a Perl script? Like $1 in shell scripting. #!/usr/bin/perl -w $myfile = $1; doesn't work. Thanks. Scott
Re: passing parameters to Perl script
On Jun 28, Scott Taylor said: How can I pass parameters from *nix command line to a Perl script? Like $1 in shell scripting. You want the @ARGV array. $ARGV[0] is the first argument to your program. Check the 'perlvar' documentation for more about @ARGV. -- Jeff japhy Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/ I am Marillion, the wielder of Ringril, known as Hesinaur, the Winter-Sun. Are you a Monk? http://www.perlmonks.com/ http://forums.perlguru.com/ Perl Programmer at RiskMetrics Group, Inc. http://www.riskmetrics.com/ Acacia Fraternity, Rensselaer Chapter. Brother #734 ** Manning Publications, Co, is publishing my Perl Regex book **
Re: confusing Perl idioms and practices
At 09:52 AM 6/28/01 -0700, Gregg Williams wrote: Hi--I recently posted a message titled writing readable Perl. In it, I said: snip This is a simple example--too simple for some--but it gives you an idea of what I'm looking for. Thanks again for your time. Readable is like obscene (in more ways than one, in some code I've seen). I spent a little time in my book (one day I hope to have to say which book :-) going over pros and cons of different takes on this. But as it stands, readable is simply meaningless, and guaranteed to cause friction. Your elaboration doesn't help either. Readable is only meaningful in a context of how the code is going to be used and what your tactical and strategic goals are. Debating it in a virtual vacuum like this is what I call a pinhead discusssion - how many angels can dance on the head of a pin... -- Peter Scott Pacific Systems Design Technologies http://www.perldebugged.com
Re: Fork (not the kind you eat with)
A parent can fork as many times as it wants to (for that matter a child
could fork as well). So your code would look like this:
$SIG{CHLD} = IGNORE; #works on unix platforms, auto reaps children
foreach $machine (get_machines()) {
$pid = fork;
if ($pid == 0) { #I am a child
check_machine($machine);
} elsif (not $pid) {
#if parent then $pid = process id, if error then
#$pid = undef
error();
}
}
On 28 Jun 2001 17:03:39 +0100, Pierre Smolarek wrote:
The one thing in perl that gets my head all confused is fork.
Can someone point me in the right direction (be it book, website, or kind
enough to offer code).
I need to make a script that has to check 16000 servers in around 6 minutes.
My rough maths works out that 44 checks a second are needed. Each server
check takes about 0.5 seconds to return, so the best bet is to fork each
individual check, the result of which gets added to mysql so no need to have
a conversation going on between child and parent. Idealy i would like to
control the max amount children i have to, say, around 50.
Any help would be greatful.
(I have the cook book open but only seems to talk about a single parent
child pair..?!)
Pierre.
--
Today is Prickle-Prickle, the 33rd day of Confusion in the YOLD 3167
Keep the Lasagna flying!
Re: delete the last string
I want to delete a string but only the last. Example I am the titi last human on titi earth. - I want to erase the last titi nut not the other. No-one in my mailbox has mentioned a more obvious solution for the regex beginner: s/(.*)titi/$1/ Greed is good. :-) -- Peter Scott Pacific Systems Design Technologies http://www.perldebugged.com
Re: passing parameters to Perl script
On Thu, 28 Jun 2001, Scott Taylor wrote: How can I pass parameters from *nix command line to a Perl script? Like $1 in shell scripting. #!/usr/bin/perl -w $myfile = $1; This will: my $file = $ARGV[0]; @ARGV contains all of the command-line parameters. -- Brett http://www.chapelperilous.net/btfwk/ There's no such thing as a free lunch. -- Milton Friendman
Re: Fork (not the kind you eat with)
At 05:03 PM 6/28/01 +0100, Pierre Smolarek wrote: The one thing in perl that gets my head all confused is fork. Can someone point me in the right direction (be it book, website, or kind enough to offer code). Network Programming with Perl, by Lincoln Stein (Addison-Wesley, 2001) is very good on this topic. If you want the full skinny on what's going on underneath, Advanced Programming in the UNIX Environment by W. Richard Stevens (also Addison-Wesley). -- Peter Scott Pacific Systems Design Technologies http://www.perldebugged.com
RE: Perl Boilerplate???
This guy had one... http://www.best.com/~quong/perlin20/ jjr -Original Message- From: Peter Scott [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 28, 2001 1:15 PM To: David Simcik; Perl Cgi; Perl Beginners Subject: Re: Perl Boilerplate??? At 09:24 AM 6/28/01 -0500, David Simcik wrote: Hey, I, like the rest of you, am always looking for ways to make my life more convenient. Especially when coding. To this end, I am looking to fashion a well-rounded template doc that I can use in Homesite (where I do most of my work right now) made up of the essential pieces I'd expect to work with in ...
Re: referencing a flat file DB
On Thu, Jun 28, 2001 at 09:06:38AM -0700, Jon Riddle wrote:
Be forewarned, what follows is a critique of code you didn't ask about.
#!/usr/local/bin/perl -w
use CGI;
use CGI::Carp qw(carpout fatalsToBrowser);
Always:
use strict;
when debugging code.
$Q = CGI;
This assigns the string 'CGI' to $Q. I doubt that's what you intended.
my $Q = new CGI;
Remove this from here:
$content_length = $ENV{'CONTENT_LENGTH'};
read (STDIN, $posted_information, $content_length);
$posted_information =~ s/%([\dA-Fa-f][\dA-Fa-f])/pack (C, hex ($1))/eg;
$posted_information =~ s/\+/ /g;
@fields = split (//, $posted_information);
to here.
Do not roll your own CGI parser, you will almost assuredly miss something.
($label, $name) = split (/=/, $fields[0]);
($label, $street) = split (/=/, $fields[1]);
($label, $city) = split (/=/, $fields[2]);
($label, $state) = split (/=/, $fields[3]);
($label, $zip) = split (/=/, $fields[4]);
($label, $PHONE_AREA) = split (/=/, $fields[5]);
($label, $PHONE_PRE) = split (/=/, $fields[6]);
($label, $PHONE_SUFF) = split (/=/, $fields[7]);
($label, $serviceProvider) = split (/=/, $fields[8]);
($label, $lapDance) = split (/=/, $fields[9]);
($label, $lapDance2) = split (/=/, $fields[10]);
($label, $lapDance3) = split (/=/, $fields[11]);
($label, $lapDance4) = split (/=/, $fields[12]);
($label, $lapDance5) = split (/=/, $fields[13]);
Use:
my $name = $Q-param('name' );
my $street = $Q-param('street');
etc.
Better yet, don't assign them to temporary variables, use them directly when
necessary, or stick them in a hash.
#Compares correct anwsers
$lapResults .= ,$lapDance,$lapDance2,$lapDance3,$lapDance4,$lapDance5;
if ($lapResults eq
,AvaVincent,JessicaDrake,JewellDeNyle,ShaylaLaVeaux,ShaySweet) { $correct
= 1}
This looks like a bad way of doing this. You should probably put the
expected names in an array, then iterate over each of your parameters and
make sure they're in the array.
my @params = ($lapDance, $lapDance2, $lapDance3, $lapDance4, $lapDance5);
my $correct = 1;
for (my $i = 0; $i @params; $i++) {
if ($params[$i] ne $EXPECTED_NAMES[$i]) {
$correct = 0;
last;
}
}
if (!$correct) {
print $Q-redirect('http://www.ten.com/contest/thanklost.htm');
}
else {
if (one_time(1)) {
print
$Q-redirect('http://www.ten.com/contest/already.html');
}
else {
open (OUTPUT, lapdance.db) || die Cannot open lapdance.db: $!;
print OUTPUT $name, :, $street, :, $city, :, $state, :,
$zip,:, $PHONE_AREA, :, $PHONE_PRE, :, $PHONE_SUFF,\n;
Use join:
print OUTPUT join(:, $name, $street, $city, $state, ...), \n;
close OUTPUT;
print $Q-redirect('http://www.ten.com/contest/thankwon.htm');
}
}
# Routine that checks DB for previous valid
# entry comparing telephone number
sub one_time {
open (VARIFY, lapdance.db) || die Cannot open lapdance.db: $!;
while (VARIFY) {
$stats = VARIFY;
This:
$compare = { split (/:/, $stats)};
@records = \$compare;
is very likely the source of your asked problem. You are constructing an
anonymous hash with '$compare = { split (/:/, $stats)}', then assigning a
reference to that anonymous hash to $records[0].
Replace this with:
@records = split(/:/, $stats);
if (($records[6] eq $PHONE_AREA) ($records[7] eq
$PHONE_PRE) ($records[8] eq $PHONE_SUFF)) {
$sorry = 1;
}
}
close VARIFY;
return $sorry;
}
# EOF ###
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
--
Re: referencing a flat file DB
On Thu, Jun 28, 2001 at 05:34:22PM +0100, mark crowe (JIC) wrote:
$compare = { split (/:/, $stats)};
@records = \$compare;
I think you'd be better off to use:
@records = split (/:/, $stats)
While this is correct..
At the moment you are splitting to a scalar (which I think just puts the
first (or is it the last?) value from that split into the scalar) and then
assigning a reference to that scalar as an array.
this isn't. He's creating an anonymous hash with { split(/:/, $stats) },
then assigning it to $compare. He then assigns a reference to $compare to
$records[0], which makes it a reference to a hash reference.
I'm sure that's not good for you (and I'm a bit surprised that -w didn't
pick it up, or haven't you tried it from the command line?)
The code will only cause a warning if the split returns an odd number of
elements.
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
--
Re: background processing (again?)
the code that i sent you should be able to do that. /kk On Thu, Jun 28, 2001 at 09:51:19AM -0400, Ronald J. Yacketta wrote: Folks, to make a long story short I have a req to-do the following. 1) gather continues data from netstat -I hme0 $SLEEPTIME $netstatTMPFILE while still parsing other information/data etc.. that is, the script needs to be bale to collect the netstat data while it is running other process, not just fork netstat and wait for it to die/return. it will never die/return unless it is killed. Regards, Ron
Re: Fork (not the kind you eat with)
Thanks a lot and thanks to the guy who mentioned those book, amazon has
my order :)
this code was exactly what i needed...
- Original Message -
From: Chas Owens [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 28, 2001 7:07 PM
Subject: Re: Fork (not the kind you eat with)
A parent can fork as many times as it wants to (for that matter a child
could fork as well). So your code would look like this:
$SIG{CHLD} = IGNORE; #works on unix platforms, auto reaps children
foreach $machine (get_machines()) {
$pid = fork;
if ($pid == 0) { #I am a child
check_machine($machine);
} elsif (not $pid) {
#if parent then $pid = process id, if error then
#$pid = undef
error();
}
}
On 28 Jun 2001 17:03:39 +0100, Pierre Smolarek wrote:
The one thing in perl that gets my head all confused is fork.
Can someone point me in the right direction (be it book, website, or
kind
enough to offer code).
I need to make a script that has to check 16000 servers in around 6
minutes.
My rough maths works out that 44 checks a second are needed. Each server
check takes about 0.5 seconds to return, so the best bet is to fork each
individual check, the result of which gets added to mysql so no need to
have
a conversation going on between child and parent. Idealy i would like to
control the max amount children i have to, say, around 50.
Any help would be greatful.
(I have the cook book open but only seems to talk about a single parent
child pair..?!)
Pierre.
--
Today is Prickle-Prickle, the 33rd day of Confusion in the YOLD 3167
Keep the Lasagna flying!
Re: Inheritance of package global variables
On Thu, Jun 28, 2001 at 03:05:17PM -0400, Richard J. Barbalace wrote: The 'use base' pragma nicely takes care of the @ISA and %FIELDS variables for me, but I also need to have the package global variable %Attributes inherited. The 'use vars' and assignment in MyPackage is rather verbose, and I'm wondering if there is a better or terser way of doing that. What's the recommended way of inheriting package global variables? Exporting is usually a bad idea when dealing with classes, it breaks encapsulation. You should probably setup a class method for this. That being said, you can export variables just like you export any other data type, with Exporter; perldoc Exporter or http://www.perldoc.com/perl5.6/lib/Exporter.html. Michael -- Administrator www.shoebox.net Programmer, System Administrator www.gallanttech.com --
Re: background processing (again?)
On Thu, Jun 28, 2001 at 09:51:19AM -0400, Ronald J. Yacketta wrote: to make a long story short I have a req to-do the following. 1) gather continues data from netstat -I hme0 $SLEEPTIME $netstatTMPFILE while still parsing other information/data etc.. Given David M. Lloyd's suggestion to open a handle on netstat output, you still need to read from the handle, which is a blocking operation. Unless you've already got a framework built for reading chunks from a filehandle then continuing on to process other things, you'll probably need an event loop, or a select loop, to go with this. What is it this is intended to accomplish? What is the program you're writing? Perhaps it would benefit from POE or Event.pm. Michael -- Administrator www.shoebox.net Programmer, System Administrator www.gallanttech.com --
Administering Perl
I have a question on administering perl.. I recently upgraded perl on the box from 5.6 to 5.6.1 and now i'm seeing alot of these Subroutine redefined messages. what is a subroutine redefined message?? I also had to reinstall alot of CPAN modules.. i'm probably being boneheaded and there's documenation about this somewhere.. but how can I avoid re-installing all the cpan modules i've installed when i upgrade perl? is it as simple as copying them over? Mike
date:calc
Hi,
Can you tell me if Date:Calc is the best way for calcuating dates? I would like to
pass specific dates to analog to do log file analysis on the dates.
Here are my scripts:
1)Previous Month
#!/usr/bin/perl
use Date::Calc qw( Today Days_in_Month Date_to_Text);
($year,$month) = Today();
#calculating previous month
if ($month == 1)
{
$previous_mon = 12;
$year = $year - 1;
$days=Days_in_Month($year,$previous_mon);
$begin_date = 01;
$end_date = $days;
print Previous Month's Dates were From $year $previous_mon$begin_date To $year
$previous_mon$end_date.\n
}
else
{
if ($month 1)
{
$previous_mon = $month - 1;
$days=Days_in_Month($year,$previous_mon);
$begin_date = 01;
$end_date = $days;
print Previous Month's Dates were From $year $previous_mon$begin_date To $year
$previous_mon$end_date.\n
}
}
2)Previous Week
#!/usr/bin/perl
use Date::Calc qw( Today Day_of_Week Add_Delta_Days
Day_of_Week_to_Text Date_to_Text );
$saturday_dow = 6; # 6 = Saturday
$sunday_dow = 7; # 7 = Sunday
@today = Today();
$current_dow = Day_of_Week(@today);
#calculating saturday's date of previous week
if ($saturday_dow == $current_dow)
{
@prev = Add_Delta_Days(@today,-7);
}
else
{
if ($saturday_dow $current_dow)
{
@next = Add_Delta_Days(@today,
$saturday_dow - $current_dow);
@prev = Add_Delta_Days(@next,-7);
}
else
{
@prev = Add_Delta_Days(@today,
$saturday_dow - $current_dow);
@next = Add_Delta_Days(@prev,+7);
}
}
$dow = Day_of_Week_to_Text($saturday_dow);
print Today is: , ' ' x length($dow),
Date_to_Text(@today), \n;
@previoussaturday=@prev;
#calculating sunday's date of previous week
#sunday is 7, which is larger than any other weekday 1-7
if ($sunday_dow == $current_dow)
{
@prev = Add_Delta_Days(@today,-14);
}
else
{
if ($sunday_dow $current_dow)
{
@next = Add_Delta_Days(@today,
$sunday_dow - $current_dow);
@prev = Add_Delta_Days(@next,-14);
}
}
$dow2 = Day_of_Week_to_Text($sunday_dow);
@previoussunday=@prev;
print Previous Weeks Dates were From @previoussunday To @previoussaturday.\n
__
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Trailing spaces ... aka rtrim();
All,
I wish to remove trailing spaces..
#!/usr/bin/perl -w
use strict ;
my $line ;
while () {
chomp $_ ;
$line =~ s/\s+$//; # remove trailing spaces
print $line \n;
}
My output is equal number of blank lines..
Where is my error?
Frank
Re: Trailing spaces ... aka rtrim();
On Thu, 28 Jun 2001, Frank Newland wrote:
#!/usr/bin/perl -w
use strict ;
my $line ;
while () {
chomp $_ ;
$line =~ s/\s+$//; # remove trailing spaces
print $line \n;
}
No where in your script do you assign a value to line. What you want is
something like:
#!/usr/bin/perl -w
use strict ;
while (chomp(my $line = )) {
$line =~ s/\s+$//; # remove trailing spaces
print $line \n;
}
http://www.chapelperilous.net/btfwk/
I guess it was all a DREAM ... or an episode of HAWAII FIVE-O ...
Re: Trailing spaces ... aka rtrim();
At 03:27 PM 6/28/01 -0500, you wrote:
All,
I wish to remove trailing spaces..
#!/usr/bin/perl -w
use strict ;
my $line ;
while () {
chomp $_ ;
$line =~ s/\s+$//; # remove trailing spaces
print $line \n;
}
My output is equal number of blank lines..
Where is my error?
Frank
You haven't initialized $line. You should either use $_ as the variable on
which you perform the regex and then print, or set $line = $_ or
while ($line = )
hth
Peter Cline
Inet Developer
New York Times Digital
Re: Trailing spaces ... aka rtrim();
Bud, what do you expect to be in $line?
you're declaring it, running a while loop, assigning input to $_, changing
something $line (which holds nothing mind you) then printing $line for every
line you get from
in short, i *think* you mean:
while(){ s/\s+$//; print }
hth
Jos Boumans
- Original Message -
From: Frank Newland [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 28, 2001 10:27 PM
Subject: Trailing spaces ... aka rtrim();
All,
I wish to remove trailing spaces..
#!/usr/bin/perl -w
use strict ;
my $line ;
while () {
chomp $_ ;
$line =~ s/\s+$//; # remove trailing spaces
print $line \n;
}
My output is equal number of blank lines..
Where is my error?
Frank
Re: Administering Perl
tree [[EMAIL PROTECTED]] quoth: *I have a question on administering perl.. * *I recently upgraded perl on the box from 5.6 to 5.6.1 and now i'm seeing *alot of these Subroutine redefined messages. what is a subroutine *redefined message?? * *I also had to reinstall alot of CPAN modules.. i'm probably being *boneheaded and there's documenation about this somewhere.. but how can I *avoid re-installing all the cpan modules i've installed when i upgrade *perl? is it as simple as copying them over? It depends on the version and it gets to be a bit of a dodgy situation to which there is no easily defined answer for everyone. Assuming that you made 5.6.1 and installed it without a hitch you will notice that /usr/local/lib/perl5 has a 5.6/ 5.6.1/ and site_perl/ dir in it. If you type 'perl -V' it will show you the @INC which will point to the 5.6.1 libs. Now your locally installed modules are going to be installed in /usr/local/lib/perl5/site_perl/5.6.1 [ if you installed in /usr/local ] and your 5.6 modules will be in /usr/local/lib/perl5/sit_perl/5.6. You could try and copy over all of the 5.6 modules into 5.6.1 and then copy the perllocal.pod to the arch dir in the 5.6.1 distribution changing the installation path for the modules in it butit's a lot more work than it's worth especially when you can't be sure the 5.6.1 didn't break something that worked fine with 5.6. The saner way to do this is to use autobundle with CPAN.pm if you still have a copy of your perl5.6 binary around. http://www.cpan.org/misc/cpan-faq.html#How_make_bundle shows how to use this. It makes the job of installing modules en masse quite a bit less painful. e.
RE: Windows Background Process
I have this snippet of code that I picked up from Learning Perl on Win32 Systems (O'Reilly) that may be helpful. For more info, check the Win32::Process module. As a Perl rookie myself, I really can't explain it - I just know it works. ;-) use Win32::Process; Win32::Process::Create($Process, c:\\program files\\ultraedit\\uedit32.exe, uedit32 $alljobs_list , 0, DETACHED_PROCESS, .)|| die Creating UltraEdit process: $!; Dan Murphy [EMAIL PROTECTED] EMC Corp.508-435-1000 x14559 Hopkinton, MA 01748 EMC2 where information lives -Original Message- From: C.Ouellette [mailto:[EMAIL PROTECTED]] Sent: Wednesday, June 27, 2001 6:17 AM To: [EMAIL PROTECTED] Subject: Windows Background Process Hello, I need to start an external program from my perl script. This program will need to run in the background so my script can continue doing other things. It also still needs to notify the program when it terminates. I would appreciate any help on how I would do this. My environment is Windows NT 4.0, with Activestate perl 5.6.1. I'm also not sure how Windows runs a background process, so any tips there would be appreciated. Lastly, I've been monitoring this list for a few weeks now. It has been extremely helpful in getting me started with Perl. Thank you to everyone involved. Tina Ouellette __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
data matching
Hi all,
I am trying to skip any line in my input file that doesn't have a city with a street
named 'MAIN'. I am matching record[3] in my input file with a $city (array) from a
hash (%state) that I got from another file. The problem is that @city contains more
than one element!
while ($line = INPUT){
$city = $record[3] ;
for ($i = 0; $i = $#{ $state{$city}; $i ++ ) {
next if$state{$city}[$i] ne MAIN
}
...
}
@city is an array of streets can be = ['MAIN', 'MAIN1','BROADWAY','PARK'], I want to
match
Thanks for your help
I.S
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RE: referencing a flat file DB
Hello all, I would like to take a moment to thank everyone who helped me out on my project. I am obviously new to Perl and am a total hack, but eventually, I will become proficient. For those that are wondering, my lap dance program is just a small contest for members of www.ten.com and yes, I do work in the Porn industry (Interactive Gallery, subsidiary of Nasdaq:NOOF). Perl is alive and well in the adult world and is even traded on Wall street, the stock that is! We have an engineering team that are all mongers, however they have bigger fish to fry then my little contest program. So, thanks again for the help and very constructive criticisms. One day, I will be the mentor! P.S., I would give out a user name and password, but the likeliness of their being underage participants in this forum is too great. Jon Riddle Interactive Gallery Inc. Phone- 818-501-4486 ext. 3037 Email- [EMAIL PROTECTED] The three great virtues of a programmer are laziness, impatience and hubris. Larry Wall
RE: Re[5]: Best practice for config file use?
From: Tim Musson [mailto:[EMAIL PROTECTED]]
I like this option the best of the 3, but it is still hard to give to
a non programing person and not expect them to mess up setting the
vars...
ie, = is what you separate things with, explaining which ' to
use (' not `), end each parameter line with a ,
You might like to check out XML::Simple it was designed for exactly
this problem.
Using Jos' example:
JIB ### config.pl ###
JIB $href = {
JIB usr= 'foo',
JIB pwd = 'bar',
JIB host = 'bleh.com',
JIB };
If you put your config data in a file called foo.xml:
config
usrfoo/usr
pwdbar/pwd
hostbleh.com/host
/config
and your script was called foo.pl:
use XML::Simple;
my $config = XMLin();
print Host: $config-{host}\n;
Then you have a script which can be configured by someone
who doesn't know Perl.
The XMLin() function takes all sorts of optional arguments
telling it where to find the XML and how to treat it, but if
you don't supply any arguments it simply looks for a file called
script name.xml in the same directory as the script.
XMLin() returns a hashref. Nested elements in the XML get
returned as nested hashrefs or arrayrefs.
More info at:
http://web.co.nz/~grantm/cpan/
Regards
Grant
=
Grant McLean | email: [EMAIL PROTECTED] | Lvl 6, BP House
The Web Limited| WWW: www.web.co.nz| 20 Customhouse Quay
Internet Solutions | Tel: +64 4 495 8250 | Box 1195, Wellington
Awesome service| Fax: +64 4 495 8259 | New Zealand
-Original Message-
From: Tim Musson [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 29, 2001 4:24 AM
To: [EMAIL PROTECTED]
Subject: Re[5]: Best practice for config file use?
Hey Jos,
I like this option the best of the 3, but it is still hard to give to
a non programing person and not expect them to mess up setting the
vars...
ie, = is what you separate things with, explaining which ' to
use (' not `), end each parameter line with a ,
Wednesday, June 27, 2001, 6:15:54 PM, you wrote:
JIB 2.script that just uses one hashref to hold all the vars you
JIB need, let's call it config.pl too
JIB ### config.pl ###
JIB $href = {
JIB usr= 'foo',
JIB pwd = 'bar',
JIB host = 'bleh.com',
JIB };
JIB ### in your script you'd say: ###
JIB require 'config.pl'
JIB use vars qw($href);#now it's just one variable
that's being used, still
JIB holding all your config data
--
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Using The Bat! eMail v1.53d
Windows NT 5.0.2195 (Service Pack 1)
Life would be easier if I had the source code.
2**4 = 16 what about 16...=2
Hi , could I do 16**(0.25) can I do that without downloading any module? Thanks, Pierre _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Re: 2**4 = 16 what about 16...=2
On Jun 28, P lerenard said: could I do 16**(0.25) can I do that without downloading any module? Yeah. Just like you did it. -- Jeff japhy Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/ I am Marillion, the wielder of Ringril, known as Hesinaur, the Winter-Sun. Are you a Monk? http://www.perlmonks.com/ http://forums.perlguru.com/ Perl Programmer at RiskMetrics Group, Inc. http://www.riskmetrics.com/ Acacia Fraternity, Rensselaer Chapter. Brother #734 ** Manning Publications, Co, is publishing my Perl Regex book **
Re: data matching
[EMAIL PROTECTED] wrote:
--- F.H [EMAIL PROTECTED] wrote:
Hi all,
Hi. =o)
I am trying to skip any line in my input file that doesn't have a
city with a street named 'MAIN'. I am matching record[3] in my input
file with a $city (array) from a hash (%state) that I got from
another file. The problem is that @city contains more than one
element!
a $city (array) ???
What do you mean?
Sorry for the confusion, But I meant city is an array and at the same time an element
of the hash %state.
while ($line = INPUT){
It might help to see some of the ellipsed code
Nothing much:
for ($line) { # get rid of quotes
s/^|$//g;
s/\s*,\s*|,*/,/g;
}
$city = $record[3] ;
for ($i = 0; $i = $#{ $state{$city}; $i ++ ) {
Never use the
for( ; ; ) { }
construct in Perl without a significant and compelling reason.
foreach is virtually always better for lots of reasons. Try:
for my $i ( 0 .. $#{ $state{$city} ) {
next if $state{$city}[$i] ne MAIN
Is that next supposed to advance the while loop?
Because I think it's an expensive no-op that just advances the for
loop.
I've tried that as well, and the purpose is to skip any line where the city doesn't
have street = 'MAIN'
Label the while like this:
READ: while($line=INPUT) {
and then specify which loop is being advanced with
next READ if
}
Hmm...
maybe:
READ: while($line=INPUT) {
my %lookup = ();
@lookup{@state{$city}} = 1 .. scalar(@state{$city});
next READ unless $lookup{MAIN};
# it's there, so do whatever code...
}
I haven't tested this, and something about it feels funny
But it's a start. =o)
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Data::Dumper module
Could someone please help me translate this. All I can figure out for
sure are the first 2 lines. For a class assignment we need to: Read
the documentation on the Data::Dumper module (type 'perldoc
Data::Dumper' ). Use it to display the contents of your data
structure. Thanks in advance.
1 @c = ('c'); #make ordinary array with value c
2 $c = \@c; #make a reference to array c
3 $b = {};#make an anonymous hash?
4 $a = [1, $b, $c];
5 $b-{a} = $a; #make hash key, a, variable a?
6 $b-{b} = $a-[1];#make hash key, b, var a's 2nd element?
7 $b-{c} = $a-[2];
8 print Data::Dumper-Dump([$a,$b,$c], [qw(a b c)]);
*** Teresa Raymond
*** http://www.mariposanet.com
*** [EMAIL PROTECTED]
Re[6]: Finding @INC
Hello Randal,
Thursday, June 28, 2001, Randal L. Schwartz [EMAIL PROTECTED] wrote:
RLS NO NO. That doesn't work. All of those unshifts are executed REGARDLESS
RLS of the $OS type.
[...]
Randal, thank you for your patience and examples, but please do not
explain how BEGIN works again. I know that.
RLS So, Maxim, YOU are demonstrating the very reason I would flunk your
RLS code. It *doesn't* work!
my code is not absolytely correct, but it *works*. In
*this* case form is more important than contents for *me*.
RLS BEGIN { unshift @INC, ... } is reducible to the standard idiom
RLS of use lib ..., and should used in preference.
I understand, that beginners@ isn't right place for my example and our
discussion, but i took a part from very old (but still
working) perl script; yes, i should have checked that part before
sending, but (sigh...) nobody is perfect.
my apologies.
Best wishes,
Maximmailto:[EMAIL PROTECTED]
Re: Data::Dumper module
Could someone please help me translate this. All I can figure out for sure
are the first 2 lines. For a class assignment we need to: Read the
documentation on the Data::Dumper module (type 'perldoc Data::Dumper' ).
Use it to display the contents of your data structure. Thanks in advance.
You seem to be pretty much there. O course, it would be a disservice to do
your homework for you, so I'll point you in the direction of how to learn
it yourself.
1 @c = ('c'); #make ordinary array with value c
2 $c = \@c; #make a reference to array c
3 $b = {};#make an anonymous hash?
All correct so far.
4 $a = [1, $b, $c];
Anonymous array. Try perldoc perlref.
5 $b-{a} = $a; #make hash key, a, variable a?
Yes, we'd say variable $a
6 $b-{b} = $a-[1];#make hash key, b, var a's 2nd element?
Not as clear an explanation as would convince me you knew what was happening.
7 $b-{c} = $a-[2];
8 print Data::Dumper-Dump([$a,$b,$c], [qw(a b c)]);
If you run this, the output should make it easier to understand what the
code is doing.
--
Peter Scott
Pacific Systems Design Technologies
http://www.perldebugged.com
Re[6]: Finding @INC
At 02:24 AM 6/29/01 +0400, Maxim Berlin wrote: Thursday, June 28, 2001, Randal L. Schwartz [EMAIL PROTECTED] wrote: RLS NO NO. That doesn't work. All of those unshifts are executed REGARDLESS RLS of the $OS type. [...] Randal, thank you for your patience and examples, but please do not explain how BEGIN works again. I know that. RLS So, Maxim, YOU are demonstrating the very reason I would flunk your RLS code. It *doesn't* work! my code is not absolytely correct, but it *works*. In *this* case form is more important than contents for *me*. Your idea of working needs some revision. Your code may produce the results you want, but it is structured in a way that implies you don't understand what it's doing, or you wouldn't have done it that way. That's unhelpful to beginners in particular, and you would be well served by looking again to see how Randal's analysis can be used to improve your use of Perl. This is not just a matter of style. I could and would have made the same arguments, but Randal was faster and more articulate. -- Peter Scott Pacific Systems Design Technologies http://www.perldebugged.com
Re: data matching
On Thu, Jun 28, 2001 at 02:34:31PM -0700, Paul wrote:
$city = $record[3] ;
for ($i = 0; $i = $#{ $state{$city}; $i ++ ) {
Never use the
for( ; ; ) { }
construct in Perl without a significant and compelling reason.
foreach is virtually always better for lots of reasons. Try:
for my $i ( 0 .. $#{ $state{$city} ) {
Well, you make a good point that one should use foreach, but then you use it
in almost identical way as the for loop. If you were to use it this way,
you might as well use a for loop. The most readable and idiomatic way to do
this is:
foreach my $street (@{ $state{$city} }) {
... if $street ne MAIN;
}
You should try to avoid the foreach (0 .. $#array) form; that list has to go
into memory somewhere, and it's just a more verbose way of saying foreach
(@array).
Otherwise, that's some good advice.
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
--
Re: Finding @INC
On Fri, Jun 29, 2001 at 02:24:56AM +0400, Maxim Berlin wrote:
Thursday, June 28, 2001, Randal L. Schwartz [EMAIL PROTECTED] wrote:
RLS NO NO. That doesn't work. All of those unshifts are executed REGARDLESS
RLS of the $OS type.
[...]
Randal, thank you for your patience and examples, but please do not
explain how BEGIN works again. I know that.
RLS So, Maxim, YOU are demonstrating the very reason I would flunk your
RLS code. It *doesn't* work!
my code is not absolytely correct, but it *works*. In
*this* case form is more important than contents for *me*.
I don't understand, if you wanted all of those paths in @INC, why put them
in conditionals? Why didn't you do something along the lines of:
# I don't recall exactly what the original code was, so the specifics
# may be a bit off.
BEGIN { unshift(@INC, C:\\winnt, /usr/local, /usr) }
if ($OSNAME eq 'nt') {
`del ...`;
} elsif ($OSNAME eq 'linux') {
`rm -rf ...`;
} elsif ($OSNAME eq 'freebsd') {
`rm -rf ...`;
}
That is, effectively, what you achieve by having BEGIN blocks in each
conditional. This certainly doesn't look like what you intended.
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
--
Re: data matching
--- Michael Fowler [EMAIL PROTECTED] wrote:
On Thu, Jun 28, 2001 at 02:34:31PM -0700, Paul wrote:
$city = $record[3] ;
for ($i = 0; $i = $#{ $state{$city}; $i ++ ) {
Never use the
for( ; ; ) { }
construct in Perl without a significant and compelling reason.
foreach is virtually always better for lots of reasons. Try:
for my $i ( 0 .. $#{ $state{$city} ) {
Well, you make a good point that one should use foreach, but then you
use it
in almost identical way as the for loop. If you were to use it this
way,
you might as well use a for loop. The most readable and idiomatic
way to do
this is:
foreach my $street (@{ $state{$city} }) {
... if $street ne MAIN;
}
You should try to avoid the foreach (0 .. $#array) form; that list
has to go
into memory somewhere, and it's just a more verbose way of saying
foreach
(@array).
Otherwise, that's some good advice.
lol -- my point was poorly made.
I meant that if you feel you *have* to iterate over indexes, you can
still use foreach.
Your point is apparently that you almost never need to iterate over
indexes, which is the half of the point I meant to make that I never
got around to, lol! =o)
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Re: data matching
Hello
Here is my script, I am missing something. All I am trying to do is to skip
LA and BURLINGTON lines, because they are missing 'MAIN'.
Thanks.
I.S
my %state;
%state = (
CHICAGO = [MAIN, BROADWAY, OAK],
LA = [DELTA, GAMMA],
BOSTON = [FIRST, MAIN],
BURLINGTON = [SECOND, ONE],
SEATTLE = [GREAT,MAIN],
);
SWITCH:{ while ($line = DATA){
#next if /^\s*$/;
@line = split /\s*,\s*/, $line;
$city = $line[3];
#print @line;
#print CITY : $city\n;
foreach $street (@{ $state{$city} } ){
print $street, \n;
if ( $street ne MAIN){
next SWITCH;
}
}
}
}
__DATA__
STATE ,IL, SDW,CHICAGO
STATE,CA, SFD,LA
STATE, MA, FDR,BOSTON
STATE, CT,FGD,BURLINGTON
STATE, WA, SDF,SEATTLE
__END__
Michael Fowler [EMAIL PROTECTED] wrote:
On Thu, Jun 28, 2001 at 02:34:31PM -0700, Paul wrote:
$city = $record[3] ;
for ($i = 0; $i = $#{ $state{$city}; $i ++ ) {
Never use the
for( ; ; ) { }
construct in Perl without a significant and compelling reason.
foreach is virtually always better for lots of reasons. Try:
for my $i ( 0 .. $#{ $state{$city} ) {
Well, you make a good point that one should use foreach, but then you use it
in almost identical way as the for loop. If you were to use it this way,
you might as well use a for loop. The most readable and idiomatic way to do
this is:
foreach my $street (@{ $state{$city} }) {
... if $street ne MAIN;
}
You should try to avoid the foreach (0 .. $#array) form; that list has to go
into memory somewhere, and it's just a more verbose way of saying foreach
(@array).
Otherwise, that's some good advice.
Michael
--
Administrator www.shoebox.net
Programmer, System Administrator www.gallanttech.com
--
__
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Matching strings
I have a series of variables, say,
$var0 $var1 $var2 $var3...
up to lots and lots depending on user input.
They are also available as an array
@vars = (element1, element2,...)
I want to test to see if any two of their values are identical. Basically if the user
has made an entry that is not unique he should get an error message.
I know how to compare any two of them of course
if ($var1 == $var2) { $youlose = yes }
but I don't want to do this over and over again.
Is there a simple way to, say, compare multiple values to see if any two within the
group match?
Thanks,
Tara
Re: Screen refresh
I found the answer in the previous post Clear Screen. On Thu, 28 Jun 2001, sevoski wrote: Hello, I would like to know of a way to refresh a console screen, opposed to just augmenting the console text. This would help greatly in making simple menus. --Sebastian Lisic
RE: Matching strings
First you would need to do a string compare vs numeric compare(ie,
eq vs == ). If they can never enter the same response or value and you
don't care about capitalization, then you could use a hash and either
lower/upper case the input. If key exists and/or is defined, then would have
to respond with a different value.
Wags ;)
-Original Message-
From: twelveoaks [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 17:53
To: [EMAIL PROTECTED]
Subject: Matching strings
I have a series of variables, say,
$var0 $var1 $var2 $var3...
up to lots and lots depending on user input.
They are also available as an array
@vars = (element1, element2,...)
I want to test to see if any two of their values are identical. Basically if
the user has made an entry that is not unique he should get an error
message.
I know how to compare any two of them of course
if ($var1 == $var2) { $youlose = yes }
but I don't want to do this over and over again.
Is there a simple way to, say, compare multiple values to see if any two
within the group match?
Thanks,
Tara
Re: Matching strings
Peter Scott Wrote:
my %h;
@h{@vars} = ();
if (keys %h != @vars) { $youlose = yes; }
Maybe I'm missing something - won't these *always* match, since @vars has been used to
create keys %h?
It seems that way when I test it.
What I want to detect is whether any two of the values within @vars are identical.
Will this do that?
-T
Optional Variables
My question pertains to using command line variables in Perl.
I created a script that uses SQL and runs from an application, and the only
parameter is optional. This script works well when the parameter is
required or not used at all.
I have altered the SQL script so that it can accept a variable or execute
the query without it, but I need to do the same in Perl.
I am using @ARGV and explicitly assigning it to a variable. Below is an
excerpt:
if (defined(@ARGV[1]))
{
$filename = @ARGV[1];
$sth-execute($filename) || die Couldn't execute statement
. $sth-errstr;
This is my first script, so I have been reading, researching and testing
what I find. However, I found nothing about this anywhere.
Please help!
Thanks,
Kim
Re: Matching strings
On Thu, 28 Jun 2001, twelveoaks [EMAIL PROTECTED] wrote,
Peter Scott Wrote:
my %h;
@h{@vars} = ();
if (keys %h != @vars) { $youlose = yes; }
Maybe I'm missing something - won't these *always* match, since @vars has
been used to create keys %h?
No, depends on the content of @array.
When you use the array @vars to create the keys, the uniqueness is
guaranteed. Peter gave you the code to prove that (I didn't test
it though). Imagine you have,
@array = qw(one one one two); # 4 elements
Since the keys must be unique, only two of the four elements fill
in the key slots, they are 'one' and 'two'. Let's create the hash
manually,
%h = (
one = 1,
one = 2,
one = 3,
two = 4,
);
You only get two keys here (the last value will override the the
previous, so in this case, $h{one} will be 3). So the comparison,
keys %h != @vars
yields true, they're not equal.
It seems that way when I test it.
What I want to detect is whether any two of the values within @vars are
identical.
Will this do that?
There's another approach, still using hash. Initialize an empty hash,
say %seen. Iterate the @vars and check whether the current element
has been seen.
my %seen;
foreach my $elem (@vars) {
if (exists $seen{$elem}) {
$youlose = 'yes';
} else {
$seen{$elem} = ''; # empty string will be sufficient,
# but see below
}
}
But it's convenient to do the check and keep in single step,
if ($seen{$elem}++) {
$youlose = 'yes';
}
It's the same as,
if ($seen{$elem}) {
$youlose = 'yes';
} else {
$seen{$elem} += 1;
}
HTH;
__END__
--
s::a::n-http(www.trabas.com)
Re: writing readable Perl
Dear Greeg, . I intend this e-mail for the more knowledgeable programmers who are reading this mailing list. Well though I don't fall in that category. I have very much felt the need of same. We can give it a start and soon we will reach the end also...;-) Rajeev Rumale ~~~ Rajeev Rumale MyAngel.Net Pte Ltd.,Phone : (65)8831530 (office) #04-01, 180 B, The Bencoolen, Email : [EMAIL PROTECTED] Bencoolen Street, Singapore - 189648 ICQ: 121001541 Website : www.myangel.net ~~~ - Original Message - From: Gregg Williams [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, June 27, 2001 6:54 AM Subject: writing readable Perl The recent Re: print FN 'junk\n' thread makes this an ideal time for me to write this e-mail -- I do *not* want to start any flames, so please reply to me privately at [EMAIL PROTECTED] -- I am a Perl semi-nubie who has, over the years, been mystified by various pieces of Perl code. I am pleased by the interest in the learn.perl.org site and [EMAIL PROTECTED] mailing list, and I'm interested in in writing some kind of article for the Perl community advocating a common sense approach to writing Perl code and that can be read (by you and others) easily in the future. I have begun collecting examples of code that I feel are needlessly complicated or obscure and invite you to send me things that you think are examples of this sort of thing. I will (eventually) try to write something up of benefit to the Perl community. Thanks. --greggw PS: PLEASE remember to send them to [EMAIL PROTECTED] Thanks. --gw ### I'm using voice-recog. software to dictate e-mails, ### ### so please ask if something reads funny; thanks -- ###
RE: Gzip on Win32
you only need winzip from www.winzip.com it can uncompress gzip and tar
zipped files no problem !!
i use all the time !!
{--}
Kris G Findlay
{--}
-Original Message-
From: Wright, James C. [mailto:[EMAIL PROTECTED]]
Sent: 28 June 2001 16:03
To: 'David Simcik'; Perl Beginners
Subject: RE: Gzip on Win32
For a great free Unix-like command line interface for Win32, install Cygwin.
It gives you many of the Gnu tools (including gzip) in its original install,
and you can install others (such as Perl). Look at
http://www.xav.com/perl/lib/Pod/perlcygwin.html.
-jim
-Original Message-
From: David Simcik [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 28, 2001 11:05 AM
To: Perl Beginners
Subject: Gzip on Win32
Hey,
I'm hoping this will be a straighforward question...I'm assuming I
need a
command-line interface GZip utility to work with the MCPAN installation
utility??? Where can I find one?
Thanks.
DTS
