running CGI locally??
Hello, I have very little experience with web programming, and even less with CGI, so I'm really in need of help here. I have an application that runs in batch mode and generates 5 output files for every input file (all are flat text, and each of the 5 is in a different directory). I would like to build a simple browser-based UI that provides links to each output file, so they can be opened and examined efficiently at the end of a run, without forcing the user to navigate through directories and search through output files from other runs. In addition, I would like to include links to the most recent output file of each type, in the event that the user wants to review the results from an old run and then link to the most recent output. (Sorry if that's not clear...) I know how to collect the filenames I need - my problem is with the display. Since I'm trying to generate dynamic HTML pages, I thought CGI would be the way to go. However, from what I understand of CGI, it requires a web server and can't be run locally. Since all of my code is in perl, I would prefer to stick with it, if possible. A coworker suggested java as an alternative, but then I'd have to learn it first. :) Any ideas on how to do something like this are appreciated. If this idea of a UI is ludicrous, I'm open to others! Thanks, Bob -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: running CGI locally??
Freimuth,Robert [EMAIL PROTECTED] wrote: : I have very little experience with web programming, and even less : with CGI, so I'm really in need of help here. Let's clarify some terminology. CGI is the Common Gateway Interface. It is language independent. For the most part, web programming is done through the CGI. : I have an application that runs in batch mode and generates 5 output : files for every input file (all are flat text, and each of the 5 is : in a different directory). : I would like to build a simple browser-based UI that provides links : to each output file, so they can be opened and examined efficiently : at the end of a run, without forcing the user to navigate through : directories and search through output files from other runs. In : addition, I would like to include links to the most recent output : file of each type, in the event that the user wants to review the : results from an old run and then link to the most recent output. : (Sorry if that's not clear ...) I know how to collect the filenames : I need - my problem is with the display. You mention above that you have some web programming experience. What are you experienced in? : Since I'm trying to generate dynamic HTML pages, I thought CGI would : be the way to go. However, from what I understand of CGI, it : requires a web server and can't be run locally. Since CGI is an interface between a program on a server and a browser it would by definition need a server. Many perl CGI programs can be tested from the command line. I tested my perl programs from the command line for about a year before I installed a local copy of Apache. : Since all of my code is in perl, I would prefer to stick with it, if : possible. A coworker suggested java as an alternative, but then I'd : have to learn it first. :) Your Java program would still need the CGI to interact with the browser. : Any ideas on how to do something like this are appreciated. : If this idea of a UI is ludicrous, I'm open to others! You may be able to install a web server on your local computer. You haven't mentioned the intended platform. Tell us what that OS is and what OS is no your local box and we can help point you in the right direction. HTH, Charles K. Clarkson -- Mobile Homes Specialist 254 968-8328 -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: running CGI locally??
: I have an application that runs in batch mode and generates 5 output : files for every input file (all are flat text, and each of the 5 is : in a different directory). : I would like to build a simple browser-based UI that provides links : to each output file, so they can be opened and examined efficiently : at the end of a run, without forcing the user to navigate through : directories and search through output files from other runs. In : addition, I would like to include links to the most recent output : file of each type, in the event that the user wants to review the : results from an old run and then link to the most recent output. : (Sorry if that's not clear ...) I know how to collect the filenames : I need - my problem is with the display. You mention above that you have some web programming experience. What are you experienced in? I'm a biologist by training. My programming experience is mostly with perl (data mining and parsing), although I worked briefly with C and VB a few years ago. I've got a bit of experience with HTML (very basic) and posting/retrieving data to/from web servers (LWP), but only what I've learned by necessity. : Since I'm trying to generate dynamic HTML pages, I thought CGI would : be the way to go. However, from what I understand of CGI, it : requires a web server and can't be run locally. Since CGI is an interface between a program on a server and a browser it would by definition need a server. Many perl CGI programs can be tested from the command line. I tested my perl programs from the command line for about a year before I installed a local copy of Apache. I was hoping I could use the local computer as the 'server', and use CGI (or something else) as a method of highly targeted directory/file navigation. : Any ideas on how to do something like this are appreciated. : If this idea of a UI is ludicrous, I'm open to others! You may be able to install a web server on your local computer. You haven't mentioned the intended platform. Tell us what that OS is and what OS is no your local box and we can help point you in the right direction. I would really like to keep the number of dependencies to a minimum, so users don't need to install a lot of other software and try to configure everything. My app is intended to be standalone, with perl (and a few non-core modules from CPAN) as the only requirements. I would guess the majority of my target user group (biologists) will be using Winxx, although I'm sure there will be the occasional *nix user also. I work on a Windows XP machine, but I also have a boot option to linux that I use occasionally. To clarify my description above, I was envisioning a navigation system with a layout similar to the ActiveState perl docs (two frames, with the TOC in the left frame and the actual docs in the right frame). In my case, the list of genes that were analyzed in a given run would appear on the left, and selecting (clicking on) a gene would produce a list of the output files from that analysis in the right frame. The output filenames would in turn link to the actual output file. In addition to the files produced in a given run, I'd like to add links to the most recent output files produced, regardless of run (the files can be created asynchronously, since different parts of the program can be run independently). Since the most recent filenames will change over time, creating a static HTML file for each gene after each run won't work. Hence, my thoughts of using CGI (or similar) to query the output files that are available in each directory and create the pages on the fly. I'm sure someone else can come up with a better method than the one I described. Thanks for all your help. Bob -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: running CGI locally??
Hi,
I think what you are trying to do is imminently accomplishable with Perl if
you are putting the interface on the web. With that being said, would you
be sending this program to others or would they access a website to find
the information? I don't how to write standalone Perl applications but if
you are running a website, then you can test your scripts either by the
command line as suggested or download the appropriate flavor of the free
Apache web server (http://www.apache.org) to your computer. I have a WinXP
myself and have both Perl and Apache locally but also am a relative newbie,
but here's my stab at the possible code anyway for my own learning
experience and I hope this helps somewhat. Remember too that you need to
learn how to secure your CGI programs -- someone else needs to help with
that. Anyone with criticism of this partial pseudoCode?
=PseudoCODE
#shebangLine, warnings and taint turned on
use CGI; # use the CGI.pm module installed with current versions of Perl
library: some CGI.pm help (http://stein.cshl.org/~lstein/)
use CGI::Carp 'fatalsToBrowser';
use strict;
my $query = new CGI;
my $filename = $query - param('nameOfInputFieldWithFileName'); #if you
give the name of the files in your html
my $geneticCodeToSearchFor = $query -
param('geneticCodeToSearchForFromFormInputField');
print Content-type: text/html \n\n;
unless (param) #type in your conditional or if you want all input fields
filled out use code as is
{
#BEGIN HTML
print PrintHTML;
html
head
titleSearch the Files/title
/head
body
form method=post action=cgi-bin/nameOfThisCGIScript
input type=text size=50 name=nameOfInputFieldWithFileName
input type=text size=100
name=geneticCodeToSearchForFromFormInputField
input type=submit value=Submit
input type=reset value=Clear Form
/form
/body
/html
PrintHTML
#END HTML, you can use anything with print statement like EOF
#but it has to be spelled exactly the same (case matters) at the print
statement and at the end of your html tags
#In this case, PrintHTML has to be on it's own line, by itself with only a
carriage return
}
else
{
print PrintHTML;
html
headtitleAlert!/title/head
bodyh1All form fields must be filled out./h1
pPlease fill out the form a href=nameOfThisCGIScriptClick
Here/a/p
/body
/html
PrintHTML
exit(0);
}
my @filepath = qw/ filepathToDirectory1 filepathToDirectory2
filepathToDirectory3/;
my $filesInDirectory = 0;
my $match = 'no';
#CODE for searching directories for $file
#Loop through @filepath array, increment $filesInDirectory until
reach end of @filepath array
#CODE to open $filepath[$filesInDirectory]
#Create hash with $filepath[$filesInDirectory]
# if ($filepath[$filesInDirectory] =~
/$filename/ig) #if you gave file name options
#if you didn't give filename
options, loop through the hash then open, slurp, close each file
#CODE for opening $file, slurping
$file, closing $file
#CODE for searching contents of $file
if (geneticCodeInFile =~
/$geneticCodeToSearchFor/ig)
$match = 'yes';
print
htmltitleGenetic Code Found/title;
print
bodyp$filename/p/body/html;
else {$match = 'no'}
if ($match = 'no)
{
print PrintHTML;
# type your html tags and messages here
a href=nameOfThisCGIScriptSearch Again/a
# rest of html tags
PrintHTML
}
=PseudoCODE
At 10:35 PM 3/4/2004, you wrote:
: I have an application that runs in batch mode and generates 5 output
: files for every input file (all are flat text, and each of the 5 is
: in a different directory).
: I would like to build a simple browser-based UI that provides links
: to each output file, so they can be opened and examined efficiently
: at the end of a run, without forcing the user to navigate through
: directories and search through output files from other runs. In
: addition, I would like to include links to the most recent output
: file of each type, in the event that the user wants to review the
: results from an old run and then link to the most recent output.
: (Sorry if that's not clear ...) I know how to collect the filenames
: I need - my problem is with the display.
You mention above that you have some web programming experience.
What are you experienced in?
I'm a biologist by training. My programming experience is mostly with perl
(data mining and parsing), although I worked briefly with C and VB a few
Re: Metacharacter problem in regexp
I already tried that, but it didn't work for me, don't know why. The \Q$pattern\E worked so my problem is solved. Petri Petri Rautakoski wrote: $text =~ s|for example \(this\)|$toBeReplaced|; works fine, but how can I backslash the metacharacters in a scalar? Lookup quotemeta qr//; -Bill- __Sx__ http://youve-reached-the.endoftheinternet.org/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Exit
Thanks Rod for your great help in this list. I was always impressed by your elegant coding. You are one the best Perl Programmer I have seen. And I learned a lot from you, thanks ! Wish you all the best for the future ... José. -Original Message- From: Rob Dixon [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 7:18 PM To: [EMAIL PROTECTED] Subject: Exit I hope, and think, that I've helped several people to be more eloquent in Perl. The language fascinates me in the way that nearly all who can speak can use it: thanks to Larry, who knew before we did what a programming language should have been. I remain available through my email address, but I have other, rather sad things to do. Thank you all for your intelligent questions and elaborations. /R -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response DISCLAIMER This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Reformatting the Date
On 2004-03-03 11:54:51 +0200, John wrote: I receive the date from the Oracle as DD/MM/YY and i want to insert that date in a mysql date field. I know that mysql date form is -MM-DD. Well, do you know if there is any date function to do the job? Yes, Date::Manip, it can do almost anything with dates. Morten -- http://m.mongers.org/ __END__ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Reformatting the Date
I fix it that with an Oracle Function (to_char()). Thank you - Original Message - From: Morten Liebach [EMAIL PROTECTED] To: Perl Beginners [EMAIL PROTECTED] Sent: Thursday, March 04, 2004 11:03 AM Subject: Re: Reformatting the Date On 2004-03-03 11:54:51 +0200, John wrote: I receive the date from the Oracle as DD/MM/YY and i want to insert that date in a mysql date field. I know that mysql date form is -MM-DD. Well, do you know if there is any date function to do the job? Yes, Date::Manip, it can do almost anything with dates. Morten -- http://m.mongers.org/ __END__ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Exit
Thanks Rob for your great help in this list. I was always impressed by your elegant coding. You are one the best Perl Programmer I have seen. And I learned a lot from you, thanks ! Wish you all the best for the future ... José. -Original Message- From: Rob Dixon [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 03, 2004 7:18 PM To: [EMAIL PROTECTED] Subject: Exit I hope, and think, that I've helped several people to be more eloquent in Perl. The language fascinates me in the way that nearly all who can speak can use it: thanks to Larry, who knew before we did what a programming language should have been. I remain available through my email address, but I have other, rather sad things to do. Thank you all for your intelligent questions and elaborations. /R -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response DISCLAIMER This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Exit
We'll miss you, shure Gabaux Linux is like a wigwam: no gates, no windows, and an apache inside! -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: PERL concatenating directory names
I'm on a Windows 2000 environment - and yes, I agree that using the PERL
conventions would be best. Unfortunately, there is a specific request for
this command to be used in this basic format. I've used the command in a
shell script (.sh) and it works fine, but no luck in PERL.
If you have any more suggestions I will be glad to try them - if not, I
thank you for your reply.
K
Rob Dixon wrote:
[EMAIL PROTECTED] wrote:
By the way,
I'm having a problem when redirecting output from a system call to a text
file. A good example would be:
command.com /c dir /O /a-d /s dir.txt
When I run this directly from the command line I will get the full path
structure in the output file. When I call this from a perl script in the
form:
system ('command.com /c dir /O /a-d /s dir.txt');
the output to the text file concatentates directory names longer than 8
characters to 8 characters. My desire is to have the output explicitly
state the full path rather than the concatenation.
Any ideas what I need to do to overcome this problem?
Which Windows system are you working on? On my XP and 98
systems this call returns the 8.3 file name in the first few
characters of each column and the full file name at the end,
whether it's a directory or a regular file.
Anything that's written in native Perl is best in my book, so
you really should read about reading directories with
perldoc -f opendir
perldoc -f readdir
perldoc -f closedir
But if you just need to traverse a directory tree then take a
look at
perldoc File::Find
HTH,
Rob
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Problm encountered in using DBI
Hi All, I am trying to connect to ORACLE thru perl I have included use DBI. On running script I get this error . install_driver(Oracle) failed: Can't load '/usr/local/lib/perl5/site_perl/5.005/sun4-solaris/auto/DBD/Oracle/Oracle.so ' for module DBD::Oracle: ld.so.1 : /usr/local/bin/perl: fatal: libclntsh.so.1.0: open failed: No such file or directory at /usr/local/lib/perl5/5.00503/sun4-solaris/DynaLoader.pm line 169. So, i guess libclntsh.so.1.0 is not present in the UNXI box. When i searched for it, i was not able to find it. I am rigth in my approach to the problem, how do i get the file in first of all. Thanks, Nilay -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
problem in array accessing
Hi All,
I have written a perl code for filtering data contained in a file
($input_file_name) based on the filter expression($expr). While doing this, I face
some problems. When I hard code the arrays @data and @col ( in red color) in the code,
I am getting the results. But the moment I get the arrays @col and @data based on the
user input file ($input_file_name) inside the if loop, there is no filter. The
reason is @data array inside the if loop (red colored) when accessed outside has
only one value and that doesn't satisfy the filter expression. Then I changed it look
like the one given in blue color. Now I don't know how should I modify
1. the sub routine sub filterdata
2. my @result array
3. print join function
All the three are highlighted in blue color.
Can some one please suggest me what changes I have to do, so that I can get the
results? Any help in this regard is solicited.
#! /usr/bin/perl -w
use strict; #- matter of style
use warnings; #- and again
my (@col,@data,$input_file_name,@temp,$header,$data_line,$i);
$input_file_name= MC_data.dat;
if (-s $input_file_name ) {
open(INPUT, $input_file_name) || die Cannot open: \nReason: $!\n;
@temp = INPUT ;
chomp @temp;
$header = shift(@temp);
$header =~ s/^\s+(.*)/$1/; #Remove the leading white spaces
@col = split /\s+/, $header;
foreach $i ( 0 .. $#temp ) {
$data_line = $temp[$i];
$data_line =~ s/^\s+(.*)/$1/; #Remove the leading white spaces
@data = split /\s+/, $data_line;
$data[$i] = split /\s+/, $data_line;
}
}
@col = qw (RUN a1 a2 a3 weight sig1 sig2 sig3);
@data=(
[qw( 1 0.20 0.20 0.20 0.76568575881.9
29289.3 -46592.6)],
[qw( 2 0.200345 0.20 0.200345 0.9175766.0
29268.4 -46497.6)],
[qw( 3 0.20 0.200345 0.20 0.76603075867.1
29259.8 -46607.4)],
[qw( 4 0.359575 0.253987 0.359575 1.27101943898.7
19675.6 -24223.1)],
[qw( 5 0.359921 0.253987 0.359921 1.27199543861.3
19666.1 -24195.2)]
);
map{ my $i=$_; no strict 'refs'; *{filter::$col[$i]} = sub{$_-[$i]} }
0..$#col;
sub filterdata
{
my $cref=shift;
grep $cref,@_
}
sub filterspec
{
my $e = shift;
map{ $e =~ s/\b$_\b/filter::$_()/g } @col;
eval sub{ $e }
}
my $expr = weight 1.2 sig1 75800;
my $filter_handler = filterspec( $expr ) or die $@;
my @result = filterdata ($filter_handler,@data);
print join($/,map{join( ,@$_)[EMAIL PROTECTED]).$/;
Thanks
Regards
Guruguhan
EACoE, India.
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RE: Problm encountered in using DBI
No, I am on Sun Solaris m/c And i have find out that I have libclntsh.so while the errro that script throws is for libclntsh.so.1.0 So, any hint how to go about it Solaris experts ? thanks -Original Message- From: Urvashi Mishra [mailto:[EMAIL PROTECTED] Sent: Thursday, March 04, 2004 5:04 PM To: Nilay Puri, Noida Subject: Re: Problm encountered in using DBI If u are working in windows .. then i guess you have t6o do system dsn settings... - Original Message - From: Nilay Puri, Noida [EMAIL PROTECTED] To: Perl List (E-mail) [EMAIL PROTECTED] Sent: Thursday, March 04, 2004 4:45 PM Subject: Problm encountered in using DBI Hi All, I am trying to connect to ORACLE thru perl I have included use DBI. On running script I get this error . install_driver(Oracle) failed: Can't load '/usr/local/lib/perl5/site_perl/5.005/sun4-solaris/auto/DBD/Oracle/Oracle.so ' for module DBD::Oracle: ld.so.1 : /usr/local/bin/perl: fatal: libclntsh.so.1.0: open failed: No such file or directory at /usr/local/lib/perl5/5.00503/sun4-solaris/DynaLoader.pm line 169. So, i guess libclntsh.so.1.0 is not present in the UNXI box. When i searched for it, i was not able to find it. I am rigth in my approach to the problem, how do i get the file in first of all. Thanks, Nilay -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Metacharacter problem in regexp
Petri Rautakoski wrote: Hi! Hello, I'm making a text replace and my text to search includes a metacharacter (. The text to be searched has been stored in a scalar for example $search. The text where the search will be made has been stored for example in a scalar $text. Here is what I'm doing: $search = for example (this); $text = looking for example (this); $toBeReplaced = that; $text =~ s|$search|$toBeReplaced|; That doesn't work, if you make it this way: $text =~ s|for example \(this\)|$toBeReplaced|; works fine, but how can I backslash the metacharacters in a scalar? If you are just searching for plain text strings then you can do this instead: substr $text, index( $text, $search ), length( $search ), $toBeReplaced; John -- use Perl; program fulfillment -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Problm encountered in using DBI
Try following commands and tell us what you see for each of them: 1) ldd -s /usr/local/lib/perl5/site_perl/5.005/sun4-solaris/auto/DBD/Oracle/Oracle.so 2) perl -v 3) /usr/local/bin/perl -v 4) perl -e 'use DBD::Oracle;' 5) /usr/local/bin/perl -e 'use DBD::Oracle;' José. -Original Message- From: Nilay Puri, Noida [mailto:[EMAIL PROTECTED] Sent: Thursday, March 04, 2004 12:46 PM To: Urvashi Mishra Cc: Perl List (E-mail) Subject: RE: Problm encountered in using DBI No, I am on Sun Solaris m/c And i have find out that I have libclntsh.so while the errro that script throws is for libclntsh.so.1.0 So, any hint how to go about it Solaris experts ? thanks -Original Message- From: Urvashi Mishra [mailto:[EMAIL PROTECTED] Sent: Thursday, March 04, 2004 5:04 PM To: Nilay Puri, Noida Subject: Re: Problm encountered in using DBI If u are working in windows .. then i guess you have t6o do system dsn settings... - Original Message - From: Nilay Puri, Noida [EMAIL PROTECTED] To: Perl List (E-mail) [EMAIL PROTECTED] Sent: Thursday, March 04, 2004 4:45 PM Subject: Problm encountered in using DBI Hi All, I am trying to connect to ORACLE thru perl I have included use DBI. On running script I get this error . install_driver(Oracle) failed: Can't load '/usr/local/lib/perl5/site_perl/5.005/sun4-solaris/auto/DBD/Oracle/Oracle.so ' for module DBD::Oracle: ld.so.1 : /usr/local/bin/perl: fatal: libclntsh.so.1.0: open failed: No such file or directory at /usr/local/lib/perl5/5.00503/sun4-solaris/DynaLoader.pm line 169. So, i guess libclntsh.so.1.0 is not present in the UNXI box. When i searched for it, i was not able to find it. I am rigth in my approach to the problem, how do i get the file in first of all. Thanks, Nilay -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response DISCLAIMER This e-mail and any attachment thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by other persons than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. For further information about Proximus mobile phone services please see our website at http://www.proximus.be or refer to any Proximus agent. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
jump out of conditional loop
hi there what syntax do i use to jump out of a conditional loop for c/java it break; return; what is it in perl syntax thx steve -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: jump out of conditional loop
On Thursday 04 March 2004 02:02 am, stephen kelly wrote:
hi there
what syntax do i use to jump out of a conditional loop
for c/java it break; return; what is it in perl syntax
thx
steve
while( ... ) { # or for, foreach, etc.
...
last; # == break
...
next; # == continue
...
}
Aloha = Beau;
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Re: jump out of conditional loop
stephen kelly wrote: hi there what syntax do i use to jump out of a conditional loop for c/java it break; return; what is it in perl syntax perldoc -f last last LABEL lastThe last command is like the break statement in C (as used in loops); it immediately exits the loop in question. If the LABEL is omitted, the [...] -- ZSDC -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
packages and variables
Cheers all,
i am doing my first steps with writing packages/modules and of course
there are problems:
the module holds a variable in a subroutine. this variable i like to
pass to the callerprogram,
so it is in the @EXPORT_OK and even in the @EXPORT. So far so good, i
thought!
but nothing happens when i run the caller-program...
i tried also defining with 'my ..' , or without 'use strict' ...
somebody has the clue?
thanx
-ralf
the module 'testMod.pm''
#==
package testMod;
use strict;
use Exporter;
our @ISA = (Exporter);
our @EXPORT= qw($test testThis);
our @EXPORT_OK = qw($test testThis);
sub testThis{ our $test = test;}
1;
the caller-program 'test.pl'
#==
use lib E:/ddswork/process_data/_makeLevel2;
use testMod qw(testThis $test);
use strict;
print 1: $testThis::test\n;
print 2: $test\n;
== nothing is printed...
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Help me out!!!
hi ! i am trying to implement multidimentional tree... and saw that a package called Tree::Nary already exits... i am use the above module and i am getting the following error ... Can't locate Tree/Nary.pm [EMAIL PROTECTED] @INC contains: C:\perl\site\lib. i have saved this module in this dir but its not working if someone can help me??
Re: Reading File grep according item 5 and sorting
On 3-mrt-04, at 09:56, R. Joseph Newton wrote:
Bjorn Van Blanckenberg wrote:
#!/usr/bin/perl
use strict;
use Getopt::Long;
GetOptions(\my %opt, 'filepath=s');
my $filepath = (%opt-{'filepath'});
my @fields = ();
my @sorted = ();
my $lastbit = 1;
my @bits = ();
open(INFILE,$filepath);
chomp(@fields = INFILE);
@sorted =
map { $_-[0] }
sort { $a-[5] cmp $b-[5] }
map { [ $_ , (split /\t/) ] } @fields;
foreach (@sorted){
@bits = split;
print \n if ($bits[4] ne $lastbit);
print $_\n;
$lastbit=$bits[4];
}
this is what I have know
Do you mind explaining a little about how the code you have so far
accomplishes
its task. It looks very similar to the example code posted on this
thread. If
I am not mistaken, the code was posted to encourage you to understand
how those
operations work
but al it does is sorting according item 5 but
want it to look in all the items of column 5 and if it contains item 5
print it in one block and then the next block separated with an return
so that
Huh?
one title state name testing number
two title2 state2 name2 final number2
one title3 state3 name3 pre number3
four title4 state4 name4 tesing2 number4
six title5 state5 name5 testing3 number5
dip title6 state6 name6 pre2 number6
fun title7 state7 name7 final2 number7
becomes
one title state name testing number
four title4 state4 name4 tesing2 number4
six title5 state5 name5 testing3 number5
two title2 state2 name2 final number2
fun title7 state7 name7 final2 number7
one title3 state3 name3 pre number3
dip title6 state6 name6 pre2 number6
I don't quite understand. In column 5, I see number, number4, ,
number5, then
back to number2. Likewise with column 2: I see state, then state2,
thenOh,
I see [banging forehead with wet rutabaga] you're using 1-based
indexing. So
you are calling column 0 column 1, etc. OK. Please warn us when you
do that.
It sounds like you are going to need to do this in two steps, first
getting the
groupings, then sorting each grouping in turn. Unfortunately, I find
it almost
impossible to understand cryptic coding style as you use above, but if
you can
eplain how the code above is working for you, we can probably help you
extend
that process to do the sub-sort on each grouping
Joseph
I understand how the code works
It reads the file end split every line according to the tabs and then
sorts everything.
For returning the info it looks at colomn 5 (1-based indexing) and if
colomn 5 of the
next line is the different print an extra newline. So it basically does
what I want
if colomn 5 is exact the same not if it start with string from colomn 5.
So It is basically what I need but without reordering (sorting) and
looking at every line that
starts with colomn 5 and then sorts that blok of tekst.
I hope I explaned it well enough.
Thanks
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Re: Help me out!!!
On Thursday 04 March 2004 1:17 pm, Urvashi Mishra wrote: hi ! i am trying to implement multidimentional tree... and saw that a package called Tree::Nary already exits... i am use the above module and i am getting the following error ... Can't locate Tree/Nary.pm [EMAIL PROTECTED] @INC contains: C:\perl\site\lib. i have saved this module in this dir but its not working if someone can help me?? Hi, What do you mean when you've 'saved the module in this dir'? If you mean that you've simply downloaded the .tgz and unzipped it into the current directory, then perl won't see it. You may get away with adding use lib './'; before the use Tree:Nary to tell Perl where to look, but you'd be better off installing the module properly. (Assuming you're on some form of unix), as root run the command perl -MCPAN -e 'install Tree::Nary' This will download and install the module for you and make it available to everyone. Note that if it is the first time you've run CPAN, you will be asked to configure it. Simply choose the most logical answers, and if you're not sure of a question, simlpy take the default. -- Gary Stainburn This email does not contain private or confidential material as it may be snooped on by interested government parties for unknown and undisclosed purposes - Regulation of Investigatory Powers Act, 2000 -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Exit
Rob Dixon wrote: I hope, and think, that I've helped several people to be more eloquent in Perl. The language fascinates me in the way that nearly all who can speak can use it: thanks to Larry, who knew before we did what a programming language should have been. I remain available through my email address, but I have other, rather sad things to do. Thank you all for your intelligent questions and elaborations. /R HI Rob, I will definitely miss your input, and particularly your catches whe I fail to check my facts carefully. I hope that whatever issues you are dealing with will turn out for the best. Joseph You are a child of the Universe No less than the trees and stars You have a right to be here And whether or not it is clear to you, no doubt the Universe is unfolding as it should Therfore be at peace with God, whatever you conceive Him [Her] to be And whatever your toils and aspirations In the noisy confusion of Life Keep peace with your Soul For all its sham, drudgery and broken dreams, it is still a beautifuol world Be careful *Strive* to be happy -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Handling blank lines in while(CONF) construct
I wrote a perl script that adds colors to text streams on the fly. It's
really handy for watching log files as they run past. I watch my mail
log files after making config changes and can mark reject in red,
spam in blue, discard is red and my console beeps, etc. It's REALLY
nice.
However, in the configuration file, the script balks if there is a
blank line in it. My script reads the config file into an array before
beginning to parse any data. If there is a blank line, it gives this
error:
Use of uninitialized value in pattern match (m//) at
/usr/local/bin/filter.pl line 43, CONF line 10.
I can probably come up with a kludge to get it to work, but what is the
correct perl way to handle it?
Here's the loop where I read in the config file:
open (CONF, $ARGV[0]) || die Can't open config file $ARGV[0], $!\n;
while (CONF) {
@conf_line=split(,);
push(@trigger_array, $conf_line[0]);
if ( $conf_line[1] =~ red ) {push(@color_array, $red)}
elsif ( $conf_line[1] =~ yellow ) {push(@color_array,
$yellow)}
elsif ( $conf_line[1] =~ blue ) {push(@color_array,
$blue)}
elsif ( $conf_line[1] =~ green ) {push(@color_array,
$green)}
elsif ( $conf_line[1] =~ cyan ) {push(@color_array,
$cyan)}
elsif ( $conf_line[1] =~ purple ) {push(@color_array,
$purple)}
elsif ( $conf_line[1] =~ gray ) {push(@color_array,
$gray)}
elsif ( $conf_line[1] =~ ltred ) {push(@color_array,
$ltred)}
elsif ( $conf_line[1] =~ yellow ) {push(@color_array,
$yellow)}
elsif ( $conf_line[1] =~ ltblue ) {push(@color_array,
$ltblue)}
elsif ( $conf_line[1] =~ ltgreen ) {push(@color_array,
$ltgreen)}
elsif ( $conf_line[1] =~ ltcyan ) {push(@color_array,
$ltcyan)}
elsif ( $conf_line[1] =~ ltpurple ) {push(@color_array,
$ltpurple)}
elsif ( $conf_line[1] =~ white ) {push(@color_array,
$white)}
elsif ( $conf_line[1] =~ ltgray ) {push(@color_array,
$ltgray)}
elsif ( $conf_line[1] =~ beep ) {push(@color_array,
$beep)}
else {push(@color_array, $white)}
}
close (CONF);
BTW. If anyone wants this script, I will re-post it after fixing this
bug. I gave it as a gift to this list last year as a present for all
the help I get from y'all.
Thanx!
-Michael
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Re: Handling blank lines in while(CONF) construct
On Mar 4, 2004, at 9:16 AM, Michael Weber wrote:
[snip background]
Here's the loop where I read in the config file:
open (CONF, $ARGV[0]) || die Can't open config file $ARGV[0], $!\n;
while (CONF) {
Try adding:
next if m/^\s*$/;
@conf_line=split(,);
push(@trigger_array, $conf_line[0]);
if ( $conf_line[1] =~ red ) {push(@color_array, $red)}
elsif ( $conf_line[1] =~ yellow ) {push(@color_array,
$yellow)}
elsif ( $conf_line[1] =~ blue ) {push(@color_array,
$blue)}
elsif ( $conf_line[1] =~ green ) {push(@color_array,
$green)}
elsif ( $conf_line[1] =~ cyan ) {push(@color_array,
$cyan)}
elsif ( $conf_line[1] =~ purple ) {push(@color_array,
$purple)}
elsif ( $conf_line[1] =~ gray ) {push(@color_array,
$gray)}
elsif ( $conf_line[1] =~ ltred ) {push(@color_array,
$ltred)}
elsif ( $conf_line[1] =~ yellow ) {push(@color_array,
$yellow)}
elsif ( $conf_line[1] =~ ltblue ) {push(@color_array,
$ltblue)}
elsif ( $conf_line[1] =~ ltgreen ) {push(@color_array,
$ltgreen)}
elsif ( $conf_line[1] =~ ltcyan ) {push(@color_array,
$ltcyan)}
elsif ( $conf_line[1] =~ ltpurple ) {push(@color_array,
$ltpurple)}
elsif ( $conf_line[1] =~ white ) {push(@color_array,
$white)}
elsif ( $conf_line[1] =~ ltgray ) {push(@color_array,
$ltgray)}
elsif ( $conf_line[1] =~ beep ) {push(@color_array,
$beep)}
else {push(@color_array, $white)}
}
close (CONF);
Hope that helps.
James
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what is similar to shell `du' in perl
I'm spending lots of time looking thru perl functions but not finding something to give me a quick reading on the size of a directory. How is that task handled in perl? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Help me out!!!
Urvashi Mishra wrote: i am trying to implement multidimentional tree... and saw that a package called Tree::Nary already exits... i am use the above module and i am getting the following error ... Can't locate Tree/Nary.pm [EMAIL PROTECTED] @INC contains: C:\perl\site\lib. i have saved this module in this dir but its not working if someone can help me?? See: perldoc perlmodinst http://www.perldoc.com/perl5.8.0/pod/perlmodinst.html -- ZSDC -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: packages and variables
Ralf Schaa wrote:
the module 'testMod.pm''
#==
package testMod;
use strict;
use Exporter;
our @ISA = (Exporter);
our @EXPORT= qw($test testThis);
our @EXPORT_OK = qw($test testThis);
sub testThis{ our $test = test;}
1;
the caller-program 'test.pl'
#==
use lib E:/ddswork/process_data/_makeLevel2;
use testMod qw(testThis $test);
use strict;
print 1: $testThis::test\n;
print 2: $test\n;
== nothing is printed...
If you had turned the warnings on, it would gave printed the warning
about the Use of uninitialized value in string so first of all move
use strict; to the top and add use warnings; in your script and in
the module.
You don't run the subroutine in your script, so it never sets the $test
variable. Also, you try to print $testThis::test but your module's
package is testMod, not testThis, so it should be $testMod::test
instead. Try this:
#!/usr/bin/perl
use strict;
use warnings;
use lib E:/ddswork/process_data/_makeLevel2;
use testMod qw(testThis $test);
testThis();
print 1: $testMod::test\n;
print 2: $test\n;
__END__
You might want to rename your module to TestMod.
See perldoc perlstyle:
Perl informally reserves lowercase module names for
pragma modules like integer and strict. Other
modules should begin with a capital letter and use
mixed case, but probably without underscores due to
limitations in primitive file systems' representations
of module names as files that must fit into a few
sparse bytes.
See also:
perldoc perlmod
perldoc perlmodlib
perldoc perlnewmod
http://www.perldoc.com/perl5.8.0/pod/perlmod.html
http://www.perldoc.com/perl5.8.0/pod/perlmodlib.html
http://www.perldoc.com/perl5.8.0/pod/perlnewmod.html
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Re: what is similar to shell `du' in perl
Harry, Here's an implementation of du written in Perl. http://www.perl.com/language/ppt/src/du/du.hewgill Steve On Thu, Mar 04, 2004 at 10:07:05AM -0600, Harry Putnam wrote: I'm spending lots of time looking thru perl functions but not finding something to give me a quick reading on the size of a directory. How is that task handled in perl? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response = Steve Mayer Oracle Corporation Project Lead1211 SW 5th Ave. Portland Development Center Suite 900 [EMAIL PROTECTED] Portland, OR 97204 Phone: 503-525-3127 = -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: packages and variables
Hi Ralf,
TMHO, you should create the $test before printing it.
In fact, change
print 1: $testThis::test\n;
into
testMod::testThis();
and afterwards, the $test will be available.
OR:
having $test global is not so profitable because you want be able to have
your personal $test variable.
You should better create it localy to testMod with the my (outside the
testThis) and call it using $testMod::test or better using a accesor.
#==
package testMod;
use strict;
use Exporter;
my $Test; # blabla..
our @ISA = (Exporter);
our @EXPORT= qw(getTest testThis);
our @EXPORT_OK = qw(getTest testThis);
sub testThis{ $test = test};
sub getTest { return $Test };
1;
the caller-program 'test.pl'
#==
use lib E:/ddswork/process_data/_makeLevel2;
use testMod qw(testThis $test);
use strict;
testMod::testThis();
print 1: .testMod::getTest(). \n;
print 2: $test\n;
hope it help
Michel
-Message d'origine-
De: Ralf Schaa [mailto:[EMAIL PROTECTED]
Date: jeudi 4 mars 2004 13:51
À: [EMAIL PROTECTED]
Objet: packages and variables
Cheers all,
i am doing my first steps with writing packages/modules and of course
there are problems:
the module holds a variable in a subroutine. this variable i like to
pass to the callerprogram,
so it is in the @EXPORT_OK and even in the @EXPORT. So far so good, i
thought!
but nothing happens when i run the caller-program...
i tried also defining with 'my ..' , or without 'use strict' ...
somebody has the clue?
thanx
-ralf
the module 'testMod.pm''
#==
package testMod;
use strict;
use Exporter;
our @ISA = (Exporter);
our @EXPORT= qw($test testThis);
our @EXPORT_OK = qw($test testThis);
sub testThis{ our $test = test;}
1;
the caller-program 'test.pl'
#==
use lib E:/ddswork/process_data/_makeLevel2;
use testMod qw(testThis $test);
use strict;
print 1: $testThis::test\n;
print 2: $test\n;
== nothing is printed...
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Re: what is similar to shell `du' in perl
Harry Putnam wrote: I'm spending lots of time looking thru perl functions but not finding something to give me a quick reading on the size of a directory. How is that task handled in perl? First of all, you can use du: $output = `du -sk /etc`; ($kilobytes) = $output =~/^(\d+)/ or die; There's also Tie::DiskUsage module: http://search.cpan.org/search?module=Tie::DiskUsage You might also take a look at du from ppt: http://search.cpan.org/src/SDAGUE/ppt-0.12/bin/du -- ZSDC -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: what is similar to shell `du' in perl
hi there, i helped myself with : $volsize = `du -ms $item` with the backticks-operator (``) the system-own function is used and output is written in the variable $volsize - check backtick-operator. works also on windows when the unxutils are installed (sourceforge.net) cheers, -ralf Harry Putnam wrote: I'm spending lots of time looking thru perl functions but not finding something to give me a quick reading on the size of a directory. How is that task handled in perl? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
loop until key is pressed
I'd like to use a while construct to loop until a key, any key, is pressed. I'm aware of the STDIN source for input, but with what function do I check for key presses regardless of Enter?
Re: Handling blank lines in while(CONF) construct
Michael Weber wrote:
open (CONF, $ARGV[0]) || die Can't open config file $ARGV[0], $!\n;
while (CONF) {
while(CONF) {
chomp;
s/^\s+//;
s/\s+$//;
next unless length;
...
@conf_line=split(,);
As far as this:
$yellow)}
elsif ( $conf_line[1] =~ blue ) {push(@color_array,
Why not just:
sub push_Colors() {
my $color = shift;
push(@color_array,$color)
}
Called like:
push_Colors($conf_line[1]);
Unless of course your data input just has a color embedded:
sometextcolorredorbluebutwhoknows...
HTH;
-Bill-
__Sx__
http://youve-reached-the.endoftheinternet.org/
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Well seeing as how I am still really new to using perl I have
accomplished what I set out to do and figured I would share it.
The goal, a simple perl script to backup a web directory, compress the
archive and then ftp the file(s) to a remote server.
If anyone knows how to make this more robust, intuitive (by creating
user defined variables etc.), able to do better date checking please
let me know.
I have used a few tutorials etc, but I learn better when someone steps
through something I have already written and points out what can be
improved etc.
Thanks in advance,
jas
[start script]
#!/usr/bin/perl
# Backup web directory to remote server via FTP
# Declare modules to use
use strict;
use warnings;
use POSIX qw(strftime);
use Archive::Tar;
use Compress::Zlib;
use File::Find;
use Net::FTP;
# Current date stamp
my $date = strftime('%Y%m%d', localtime());
# Create tarball from /path/to/www/ directory
my @files;
find(sub { push @files,$File::Find::name },/path/to/www/);
Archive::Tar-create_archive(www.tar,0,@files);
# Create Archive from recently created tarball
my $gz = system('gzip -9 www.tar');
$gz = system('mv -f www.tar.gz ' . $date . '-www.tar.gz');
# Open connection to FTP server
my $ftp = Net::FTP-new(ftp.server.com, Debug = 1)or die Could not
open Connection to ftp.server.com;
$ftp-login(user-name, 'password')or die Could not login to
ftp.server.com: $@;
# Upload all archives in /path/to/backups/ directory
foreach my $bup (glob('/path/to/backups/*-www.tar.gz')) {
$ftp-put($bup) or die Could not transfer files , $ftp-message; }
# Create array of files on remote ftp server
my @alst = $ftp-ls;
# Create empty variables
my $year = ;
my $month = ;
my $day = ;
my $c_year = ;
my $c_month = ;
my $c_day = ;
# Extract individual variables from date variable
if ($date =~ /^(\d{4})(\d{2})(\d{2})$/) {
$c_year = $1;
$c_month = $2;
$c_day = $3; }
# Loop over array and check for matching files and anything older than
30 days
my @list;
foreach my $file(@alst) {
if ($file =~ /^\d{8}-www\.t(?:ar\.)?gz$/i) {
if ($file =~ /^(\d{4})(\d{2})(\d{2})-www\.t(?:ar\.)?gz$/i) {
$year = $1;
$month = $2;
$day = $3;
if($month != $c_month) {
push @list, $file;
} else {
warn Skipping recent file: $file; }
}
} else {
warn Skipping improper file format: $file; }
}
# Loop over new array of items flagged for deletion and remove from ftp
server
foreach my $fle(@list) {
$ftp-delete($fle)or warn Cannot delete remote file ($fle): .
$ftp-message; }
$ftp-quit;
[/end script]
Wc -Sx- Jones wrote:
Jenda?
This is the partial original post -
Jas wrote:
Wouldn't this be better?
my $year = ;
my $month = ;
my $day = ;
if($file =~ /^(\d{4})(\d{2})(\d{2})-www.tar.gz$/) {
$year = $1;
$month = $2;
$day = $3;
my $chk = $month - 1;
Here - this is weird =)
03 in numerical context is 3.
File name was 20040301 - collapses to 200431 -
Not a match IMHO.
foreach($file ! $chk) {
$ftp-delete($file); }
??? Not sure but I am going to test it out
Maybe I am totally confused - I have been working on WebSphere. Yes, I
plead complete insanity.
-Bill-
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Re: Checking filenames? [:: ?Kinda Solved? ::]
In Cyberspace -- Jas wrote:
my @files;
find(sub { push @files,$File::Find::name },/path/to/www/);
Archive::Tar-create_archive(www.tar,0,@files);
Never hard-code your paths...
Eases maintenance later...
# Create Archive from recently created tarball
my $gz = system('gzip -9 www.tar');
$gz = system('mv -f www.tar.gz ' . $date . '-www.tar.gz');
Always fully qualify your program paths...
Prevents userID based security attacks...
# Create empty variables
my $year = ;
my $month = ;
my $day = ;
my $c_year = ;
my $c_month = ;
my $c_day = ;
Less wordy...
my ( $year,
$month,
$day,
$c_year,
$c_month,
$c_day ) = '';
-Bill- :)
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Perl script to switch user to root.
Hello, I want to write a perl script to switch user (to root). The problem is that since it asks for the password, I am not sure how I would pass it thru the script. I know I can run the su root with the system command in perl, but how do I take care of passing the password. Thanks. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Problm encountered in using DBI
Nilay Puri wrote: I am trying to connect to ORACLE thru perl I have included use DBI. On running script I get this error . install_driver(Oracle) failed: Can't load '/usr/local/lib/perl5/site_perl/5.005/sun4-solaris/auto/DBD/Oracle/Oracle.so ' for module DBD::Oracle: ld.so.1 : /usr/local/bin/perl: fatal: libclntsh.so.1.0: open failed: No such file or directory at /usr/local/lib/perl5/5.00503/sun4-solaris/DynaLoader.pm line 169. So, i guess libclntsh.so.1.0 is not present in the UNXI box. When i searched for it, i was not able to find it. Perl is saying it can't find Oracle.so. did you install the Oracle client libraries? if you haven't, you need to. you have a very old Perl, you should consider upgrading that as well. david -- s$s*$+/tgmecJntgRtgjvqpCvuwL$;$;=qq$ \x24\x5f\x3d\x72\x65\x76\x65\x72\x73\x65 \x24\x5f\x3b\x73\x2f\x2e\x2f\x63\x68\x72 \x28\x6f\x72\x64\x28\x24\x26\x29\x2d\x32 \x29\x2f\x67\x65\x3b\x70\x72\x69\x6e\x74 \x22\x24\x5f\x5c\x6e\x22\x3b\x3b$;eval$; -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Cache::Filecache Question
Hi, I'm having trouble finding much documentation of namespaces as used with Cache::FileCache. I've read the CPAN page and it doesn't say much about that particular issue. Could anyone point me to anything more explanatory. My particular interest is in the relation between namespace and specific cache_root (directory location in the host's filesystem). A namespace is defined relative to a specific cache_root ... right? In other words, if I switch to a different cache_root then I'm talking about a whole different set of entries, even if the namespace identifier happens to have the same value? (Or does it somehow preserve keys relative to namespace, regardless of where the cache is preserved in the filesystem? That would be too wierd ... surely it wouldn't move a bunch of cached objects if I change the cache_root ... ) TIA. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: [Perl-beginners] Perl script to switch user to root.
Actually, My program has a list of stuff to be done which needs to be done as say user x. Then I need to switch user to root as the rest of the program needs to do stuff as user root. so, me doing system(sudo su root); doesn't help as it asks for the password. On Mar 4, 2004, at 10:08 AM, Remko Lodder wrote: perhaps you should let the script do something like SUDO, and permit it to run a single command, or limited commandset of root operations, even without password, (you dont want that actually but since sudo can log stuff, it might be what you aim for) Cheers -- Kind regards, Remko Lodder Elvandar.org/DSINet.org www.mostly-harmless.nl Dutch community for helping newcomers on the hackerscene -Oorspronkelijk bericht- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Silky Manwani Verzonden: donderdag 4 maart 2004 19:03 Aan: [EMAIL PROTECTED] Onderwerp: [Perl-beginners] Perl script to switch user to root. Hello, I want to write a perl script to switch user (to root). The problem is that since it asks for the password, I am not sure how I would pass it thru the script. I know I can run the su root with the system command in perl, but how do I take care of passing the password. Thanks. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response ___ Perl-beginners mailing list [EMAIL PROTECTED] http://lists.elvandar.org/mailman/listinfo/perl-beginners -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: loop until key is pressed
At 11:00 AM 3/4/04 -0600, you wrote:
I'd like to use a while construct to loop until a key, any key, is pressed.
I'm aware of the STDIN source for input, but with what function do I check
for key presses regardless of Enter?
Use the CPAN module Term::ReadKey, and try to read a key in non-blocking
mode by passing it an argument of -1
if (defined ($char = ReadKey(-1)) ) {
# input was waiting and it was $char
} else {
# no input was waiting
}
Re: Array of objects
Jayakumar Rajagopal wrote: Hi , I have to store list of objects in Array. At the end, @arr contains n copies of last $obj, but not every $obj created. I tried storing both object, ref of object. Array contains different references, but same data. Please help. thanks, OK, this URL is not your question, but it may help you understand your situation better :) http://search.cpan.org/~lbrocard/perl5.005_04/lib/Symbol.pm -Bill- __Sx__ http://youve-reached-the.endoftheinternet.org/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Array of objects
Jayakumar Rajagopal wrote:
Hi ,
I have to store list of objects in Array. At the end, @arr contains n
copies of last $obj, but not every $obj created. I tried storing both
object, ref of object. Array contains different references, but same
data. Please help.
thanks,
Jay
the current code looks like this :
$n=0;
my @arr=();
while ( @results )
{
$n++;
my $obj = RowClass-new();
...
...
push @arr, $obj;
}
each call to RowClass::new should be returning a unique bless()'d reference.
If that's the case, the rest of your code looks fine. What is
RowClass::new() doing?
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Re: loop until key is pressed
At 11:00 AM 3/4/04 -0600, you wrote: I'd like to use a while construct to loop until a key, any key, is pressed. I'm aware of the STDIN source for input, but with what function do I check for key presses regardless of Enter? forgot to add : ReadMode 'cbreak'; before, and ReadMode 'normal'; after. should read: ReadMode 'cbreak'; $key = ReadKey(0); ReadMode 'normal'; my booboo...
Re: Checking filenames? [:: ?Kinda Solved? ::]
Wc -Sx- Jones wrote:
In Cyberspace -- Jas wrote:
my @files;
find(sub { push @files,$File::Find::name },/path/to/www/);
Archive::Tar-create_archive(www.tar,0,@files);
Never hard-code your paths...
Eases maintenance later...
Can you show me an example of how to do this?
# Create Archive from recently created tarball
my $gz = system('gzip -9 www.tar');
$gz = system('mv -f www.tar.gz ' . $date . '-www.tar.gz');
Always fully qualify your program paths...
Prevents userID based security attacks...
Can you show me an example of how to do this as well?
# Create empty variables
my $year = ;
my $month = ;
my $day = ;
my $c_year = ;
my $c_month = ;
my $c_day = ;
Less wordy...
my ( $year,
$month,
$day,
$c_year,
$c_month,
$c_day ) = '';
Awesome, I will use this on future scripts.
-Bill- :)
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RE: [Perl-beginners] Perl script to switch user to root.
you obviously didn't read the sudo help pages, you can run the script as user y and let it do root things by using sudo reboot for example the system should reboot when you have defined sudo correctly. man sudo should help you further on the way :) -- Kind regards, Remko Lodder Elvandar.org/DSINet.org www.mostly-harmless.nl Dutch community for helping newcomers on the hackerscene -Oorspronkelijk bericht- Van: Silky Manwani [mailto:[EMAIL PROTECTED] Verzonden: donderdag 4 maart 2004 19:15 Aan: Remko Lodder CC: [EMAIL PROTECTED] Onderwerp: Re: [Perl-beginners] Perl script to switch user to root. Actually, My program has a list of stuff to be done which needs to be done as say user x. Then I need to switch user to root as the rest of the program needs to do stuff as user root. so, me doing system(sudo su root); doesn't help as it asks for the password. On Mar 4, 2004, at 10:08 AM, Remko Lodder wrote: perhaps you should let the script do something like SUDO, and permit it to run a single command, or limited commandset of root operations, even without password, (you dont want that actually but since sudo can log stuff, it might be what you aim for) Cheers -- Kind regards, Remko Lodder Elvandar.org/DSINet.org www.mostly-harmless.nl Dutch community for helping newcomers on the hackerscene -Oorspronkelijk bericht- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Silky Manwani Verzonden: donderdag 4 maart 2004 19:03 Aan: [EMAIL PROTECTED] Onderwerp: [Perl-beginners] Perl script to switch user to root. Hello, I want to write a perl script to switch user (to root). The problem is that since it asks for the password, I am not sure how I would pass it thru the script. I know I can run the su root with the system command in perl, but how do I take care of passing the password. Thanks. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response ___ Perl-beginners mailing list [EMAIL PROTECTED] http://lists.elvandar.org/mailman/listinfo/perl-beginners -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: what is similar to shell `du' in perl
Steve Mayer [EMAIL PROTECTED] writes: Harry, Here's an implementation of du written in Perl. http://www.perl.com/language/ppt/src/du/du.hewgill Nice ... thanks -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: what is similar to shell `du' in perl
Ralf Schaa [EMAIL PROTECTED] writes: hi there, i helped myself with : $volsize = `du -ms $item` with the backticks-operator (``) the system-own function is used and output is written in the variable $volsize - check backtick-operator. works also on windows when the unxutils are installed (sourceforge.net) I wanted to stay away form qx or back tics just to make sure it was portable. I see several answers here now... thanks. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Array of objects
Bob,
Thanks. Already I have been working out on the same row. I think I misunderstood
significance of self reference, which is first parameter of methods. After finishing I
would mail.
regards,
Jay
-Original Message-
From: Bob Showalter [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 04, 2004 1:38 PM
To: Jayakumar Rajagopal; [EMAIL PROTECTED]
Subject: RE: Array of objects
Jayakumar Rajagopal wrote:
Hi ,
I have to store list of objects in Array. At the end, @arr contains n
copies of last $obj, but not every $obj created. I tried storing both
object, ref of object. Array contains different references, but same
data. Please help.
thanks,
Jay
the current code looks like this :
$n=0;
my @arr=();
while ( @results )
{
$n++;
my $obj = RowClass-new();
...
...
push @arr, $obj;
}
each call to RowClass::new should be returning a unique bless()'d reference.
If that's the case, the rest of your code looks fine. What is
RowClass::new() doing?
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RE: Array of objects
Bob,
Your guess is perfect. Thanks a lot.
All the problems happened due to misunderstanding of class behaviour. ( new() and
get() functions).
cheers,
Jay
-Original Message-
From: Bob Showalter [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 04, 2004 1:38 PM
To: Jayakumar Rajagopal; [EMAIL PROTECTED]
Subject: RE: Array of objects
Jayakumar Rajagopal wrote:
Hi ,
I have to store list of objects in Array. At the end, @arr contains n
copies of last $obj, but not every $obj created. I tried storing both
object, ref of object. Array contains different references, but same
data. Please help.
thanks,
Jay
the current code looks like this :
$n=0;
my @arr=();
while ( @results )
{
$n++;
my $obj = RowClass-new();
...
...
push @arr, $obj;
}
each call to RowClass::new should be returning a unique bless()'d reference.
If that's the case, the rest of your code looks fine. What is
RowClass::new() doing?
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Jas wrote:
Wc -Sx- Jones wrote:
In Cyberspace -- Jas wrote:
my @files;
find(sub { push @files,$File::Find::name },/path/to/www/);
Archive::Tar-create_archive(www.tar,0,@files);
Never hard-code your paths...
Eases maintenance later...
Can you show me an example of how to do this?
Either near the beginning of your code or in a separate include file
(which is what I do) just name all the paths:
my $www = (-d /usr/local/Forsaken) ? '/usr/local/Forsaken'
: die HOMEDIR Missing;
Then you use it in your code:
find(sub { push @files,$File::Find::name }, $www);
# Create Archive from recently created tarball
my $gz = system('gzip -9 www.tar');
$gz = system('mv -f www.tar.gz ' . $date . '-www.tar.gz');
Always fully qualify your program paths...
Prevents userID based security attacks...
Can you show me an example of how to do this as well?
Same deal here:
my $gzip = (-s /usr/bin/gzip) ? '/usr/bin/gzip'
: die gzip Missing;
All of these tests may likely not be needed if your system is the only
place you will ever run your scripts -- but if you plan on sharing them
you need to test a few things at least...
I mean, at one time or another, we are all guilty of:
chomp(my $userid = `/usr/ucb/whoami` || `/usr/bin/whoami` || 'root');
-Bill-
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http://youve-reached-the.endoftheinternet.org/
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Re: Handling blank lines in while(CONF) construct
Michael Weber wrote:
I wrote a perl script that adds colors to text streams on the fly. It's
really handy for watching log files as they run past. I watch my mail
log files after making config changes and can mark reject in red,
spam in blue, discard is red and my console beeps, etc. It's REALLY
nice.
However, in the configuration file, the script balks if there is a
blank line in it. My script reads the config file into an array before
beginning to parse any data. If there is a blank line, it gives this
error:
Use of uninitialized value in pattern match (m//) at
/usr/local/bin/filter.pl line 43, CONF line 10.
I can probably come up with a kludge to get it to work, but what is the
correct perl way to handle it?
Here's the loop where I read in the config file:
open (CONF, $ARGV[0]) || die Can't open config file $ARGV[0], $!\n;
while (CONF) {
@conf_line=split(,);
This should work:
my @conf_line = split /,/ or next;
push(@trigger_array, $conf_line[0]);
^ ^
You don't need to convert $conf_line[0] to a string, it already is a
string!
John
--
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program
fulfillment
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Wc -Sx- Jones wrote:
Jas wrote:
Wc -Sx- Jones wrote:
In Cyberspace -- Jas wrote:
my @files;
find(sub { push @files,$File::Find::name },/path/to/www/);
Archive::Tar-create_archive(www.tar,0,@files);
Never hard-code your paths...
Eases maintenance later...
Can you show me an example of how to do this?
Either near the beginning of your code or in a separate include file
(which is what I do) just name all the paths:
my $www = (-d /usr/local/Forsaken) ? '/usr/local/Forsaken'
: die HOMEDIR Missing;
Then you use it in your code:
find(sub { push @files,$File::Find::name }, $www);
# Create Archive from recently created tarball
my $gz = system('gzip -9 www.tar');
$gz = system('mv -f www.tar.gz ' . $date . '-www.tar.gz');
Always fully qualify your program paths...
Prevents userID based security attacks...
Can you show me an example of how to do this as well?
Same deal here:
my $gzip = (-s /usr/bin/gzip) ? '/usr/bin/gzip'
: die gzip Missing;
All of these tests may likely not be needed if your system is the only
place you will ever run your scripts -- but if you plan on sharing them
you need to test a few things at least...
I mean, at one time or another, we are all guilty of:
chomp(my $userid = `/usr/ucb/whoami` || `/usr/bin/whoami` || 'root');
I am not sure what this means? Is this the process ID or the perl
script is running as a root user?
-Bill-
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http://youve-reached-the.endoftheinternet.org/
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Passing Data Between Servers
I have a sco server which I hate to work on and I do not have full admin rights to. (We don't own it). I would like to be able to take any data that is sent to a perl script and then just send out to another perl script that would be waiting to accept it. Then based on the contents of input lunch another perl script and send in the data. I know this is vague but I will give you a for instance. Are archaic software is going to print an order out to a text file that is piped rather then written to a perl script. I want that the script to then send it to my linux server (Maybe with a daemon or something just waiting for input) which then would see it read the first line which tell it that hey we need to parse this data into this postscript template and then send it off using sendfax(Hylafax). That parsing and send would be its own script. The linux server would need to be able to accept more then 1 transaction at a time. Any help would be greatly appreciated. TIA, Paul Kraus --- PEL Supply Company Network Administrator --- 800 321-1264 Toll Free 216 267-5775 Voice 216 267-6176 Fax www.pelsupply.com --- -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Passing Data Between Servers
At 03:37 PM 3/4/04 -0500, you wrote: I have a sco server which I hate to work on and I do not have full admin rights to. (We don't own it). I would like to be able to take any data that is sent to a perl script and then just send out to another perl script that would be waiting to accept it. Then based on the contents of input lunch another perl script and send in the data. I know this is vague but I will give you a for instance. Are archaic software is going to print an order out to a text file that is piped rather then written to a perl script. I want that the script to then send it to my linux server (Maybe with a daemon or something just waiting for input) which then would see it read the first line which tell it that hey we need to parse this data into this postscript template and then send it off using sendfax(Hylafax). That parsing and send would be its own script. The linux server would need to be able to accept more then 1 transaction at a time. Any help would be greatly appreciated. TIA, Paul Kraus --- PEL Supply Company Network Administrator --- 800 321-1264 Toll Free 216 267-5775 Voice 216 267-6176 Fax www.pelsupply.com --- Paul, Network Programming with Perl by Stein is a good place to start. It discusses forking children, blocking and non-blocking I/O, among others, which will be considerations you'll want to make. Tim -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Checking filenames? [:: ?Kinda Solved? ::]
Jas [EMAIL PROTECTED] wrote:
:
: Wc -Sx- Jones wrote:
:
: In Cyberspace -- Jas wrote:
:
: # Create empty variables
: my $year = ;
: my $month = ;
: my $day = ;
: my $c_year = ;
: my $c_month = ;
: my $c_day = ;
:
: Less wordy...
:
: my ( $year,
: $month,
: $day,
: $c_year,
: $c_month,
: $c_day ) = '';
:
: Awesome, I will use this on future scripts.
It doesn't do the same thing. You would need:
my ( $year,
$month,
$day,
$c_year,
$c_month,
$c_day ) = ('') x 6;
Though we only need one of them for this algorithm
(untested):
# Current date stamp
my $date = strftime '%Y%m%d', localtime $^T;
.
.
.
# Check for matching files not from this month
my $this_month = strftime '%m', localtime $^T;
my @list;
foreach my $file ( $ftp-ls ) {
unless ( $file =~ /^\d{4}(\d{2})\d{2}-www\.t(?:ar\.)?gz$/i ) {
warn Skipping improper file format: $file;
next;
}
unless ( $1 != $this_month ) {
warn Skipping recent file: $file;
next;
}
push @list, $file;
}
$^T is the time the script started. By using it for a time
stamp, instead of time(), we don't have to jump through hoops to
find the month and we have a constant time stamp in an easy to
use format.
HTH,
Charles K. Clarkson
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Re: Passing Data Between Servers
On Thursday 04 March 2004 22:26, Tim generously enriched virtual reallity by making up this one: Paul, Network Programming with Perl by Stein is a good place to start. It discusses forking children, blocking and non-blocking I/O, among others, which will be considerations you'll want to make. ...and at least the scripts are available on the net: http://modperl.com:9000/perl_networking Have fun, Wolf -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Checking filenames? [:: ?Kinda Solved? ::]
Jas wrote: chomp(my $userid = `/usr/ucb/whoami` || `/usr/bin/whoami` || 'root'); I am not sure what this means? Is this the process ID or the perl script is running as a root user? Nope, it is a simple short circuit to see who the UserID program of the program was; It states that if I cant tell who I am (because, for example, all the programs I tried for whoami failed (but I ignored the errors)) then I will pretend I am root -- doesnt mean I am root... -Bill- __Sx__ http://youve-reached-the.endoftheinternet.org/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: perl hex editor
Thanks, that works perfectly. Now I just have to figure out how to turn it
back into a valid file. I tried using pack 'b*' but I had no luck. Any
suggestions?
Joel
- Original Message -
From: John W. Krahn [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, March 03, 2004 5:31 PM
Subject: Re: perl hex editor
Joel wrote:
I'm trying to write a program in perl that will take a binary file,
convert
it to hex, then save it to a text file. So far I'm not having any luck.
The
best I've been able to do is copy the file and open it in a text editor.
Here is my code:
#!/usr/bin/perl
use warnings;
use strict;
print Enter path:\n;
my $filename = ;
chomp $filename;
print Save as what?\n;
my $savefile=;
chomp $savefile;
open (BINARY, $filename) || die Couldn't open file: $!;
binmode BINARY;
my $x=BINARY;
open (SAVE,$savefile) || die Unable to save: $!;
print SAVE 0b$x;
close BINARY;
close SAVE;
Any ideas?
Perhaps this is what you want:
#!/usr/bin/perl
use warnings;
use strict;
print 'Enter path: ';
chomp( my $filename = STDIN );
print 'Save as what? ';
chomp( my $savefile = STDIN );
open BINARY, '', $filename or die Couldn't open file: $!;
binmode BINARY;
open SAVE, '', $savefile or die Unable to save: $!;
while ( BINARY ) {
print SAVE unpack( 'H*', $_ ), \n;
}
close BINARY;
close SAVE;
__END__
John
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Hmmm, I get 3 Indians in only the first variable anyways =/ #! /usr/bin/perl -w use strict; # Make -w / use strict; happy... my ($onelittle, $twolittle, $threelittle, ) = 'Indians' x 3; print 1 $onelittle 2 $twolittle 3 $threelittle\n\n; __END__ Output - bash-2.05$ perl axxa Use of uninitialized value in concatenation (.) or string at axxa line 12. Use of uninitialized value in concatenation (.) or string at axxa line 12. 1 IndiansIndiansIndians 2 3 -Bill- __Sx__ http://youve-reached-the.endoftheinternet.org/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: Checking filenames? [:: ?Kinda Solved? ::]
WC -Sx- Jones [mailto:[EMAIL PROTECTED]
:
: Hmmm, I get 3 Indians in only the first variable anyways =/
:
:
: #! /usr/bin/perl -w
:
: use strict;
:
: # Make -w / use strict; happy...
: my ($onelittle,
: $twolittle,
: $threelittle,
: ) = 'Indians' x 3;
Ahh! Grasshopper ... :)
Make 'Indians' an array.
my( $onelittle,
$twolittle,
$threelittle, ) = ('Indians') x 3;
HTH,
Charles K. Clarkson
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Charles K. Clarkson wrote:
Make 'Indians' an array.
my( $onelittle,
$twolittle,
$threelittle, ) = ('Indians') x 3;
Create it with a HereDoc =)
-Bill-
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RE: Checking filenames? [:: ?Kinda Solved? ::]
Hi,
I have to write my first Perl script . This scripts Searches for rare =
codons in nucleotide sequence . The nucleotide sequence is entered by =
the user in the format ATTGCAA.. and then the program breaks this =
sequence in the groups of three alphabets like ATT,GCA...so no.=20
Please suggest .
Thanks
-Original Message-
From: Charles K. Clarkson [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 04, 2004 4:44 PM
To: [EMAIL PROTECTED]
Subject: RE: Checking filenames? [:: ?Kinda Solved? ::]
WC -Sx- Jones [mailto:[EMAIL PROTECTED]
:
: Hmmm, I get 3 Indians in only the first variable anyways =/
:
:
: #! /usr/bin/perl -w
:
: use strict;
:
: # Make -w / use strict; happy...
: my ($onelittle,
: $twolittle,
: $threelittle,
: ) = 'Indians' x 3;
Ahh! Grasshopper ... :)
Make 'Indians' an array.
my( $onelittle,
$twolittle,
$threelittle, ) = ('Indians') x 3;
HTH,
Charles K. Clarkson
--
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Re: Checking filenames? [:: ?Kinda Solved? ::]
On Friday 05 March 2004 02:03, Sumit Kaur generously enriched virtual reallity by making up this one: Hi, Hi, I have to write my first Perl script . This scripts Searches for rare = codons in nucleotide sequence . The nucleotide sequence is entered by = the user in the format ATTGCAA.. and then the program breaks this = sequence in the groups of three alphabets like ATT,GCA...so no.=20 Please suggest . I first of all suggest you use new subject line... Then: read Learning perl by Randal Schwartz and Tom Phoenix and tell us if you are learning perl as a first language or allready know about control structures, filehandles and regluar expressions Then: what do you mean by rare - do you want the program to figure out, what the least frequent codons are and list/count/whatever them or do you have a prior definition of rare. Further (given your example above): ATTGCAA ATT TTG TGC are all these codons or do you assume your user supplied sequence starts somewhere you know and goes on in triplets from there on? (That is, does the user supply only exons starting with the start tripplet?) Once you get past the first steps: look at the bioperl modules at cpan and at www.Bioperl.org Enjoy -Wolf -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
nucleotide seq Was Re: Checking filenames? [:: ?Kinda Solved? ::]
Sumit Kaur wrote:
Hi,
I have to write my first Perl script . This scripts Searches for rare =
codons in nucleotide sequence . The nucleotide sequence is entered by =
the user in the format ATTGCAA.. and then the program breaks this =
sequence in the groups of three alphabets like ATT,GCA...so no.=20
Please suggest .
Please dont piggy back post - it breaks the thread of the original
conversation.
If the data will always be three - maybe this will give you an idea:
@array = split(//, 'ABCDEFGHIJKLMONPQRSTUVWXYZ');
my $index = -1;
while($#array $index) {
print \nSet $index ;
print $array[++$index];
print $array[++$index];
print $array[++$index];
}
and so on...
-Bill-
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Charles K. Clarkson wrote:
WC -Sx- Jones [mailto:[EMAIL PROTECTED]
:
: Hmmm, I get 3 Indians in only the first variable anyways =/
:
: # Make -w / use strict; happy...
: my ($onelittle,
: $twolittle,
: $threelittle,
: ) = 'Indians' x 3;
Ahh! Grasshopper ... :)
Make 'Indians' an array.
a list
perldoc -q What is the difference between a list and an array
my( $onelittle,
$twolittle,
$threelittle, ) = ('Indians') x 3;
John
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Wc -Sx- Jones wrote:
Charles K. Clarkson wrote:
Make 'Indians' an array.
my( $onelittle,
$twolittle,
$threelittle, ) = ('Indians') x 3;
Create it with a HereDoc =)
Oh, how do you do that?
John
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Re: Checking filenames? [:: ?Kinda Solved? ::]
Wc -Sx- Jones wrote: Jas wrote: chomp(my $userid = `/usr/ucb/whoami` || `/usr/bin/whoami` || 'root'); I am not sure what this means? Is this the process ID or the perl script is running as a root user? Nope, it is a simple short circuit to see who the UserID program of the program was; It states that if I cant tell who I am (because, for example, all the programs I tried for whoami failed (but I ignored the errors)) then I will pretend I am root -- doesnt mean I am root... Why not use $ to find out who you are? John -- use Perl; program fulfillment -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: perl hex editor
Joel wrote: Thanks, that works perfectly. Now I just have to figure out how to turn it back into a valid file. I tried using pack 'b*' but I had no luck. Any suggestions? Joel Depends on how the bytes are stored at the point where you are ready to print them. Presuming numerically by the byte, try something like print OUT pack(C, $_) for @bytes; # parens optional Joseph Note: Please do not top post, and please trim any text to which you are not responding. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
RE: perl hex editor
Does it need to be Hex?
Have you considered 'base64'??
(1) There are plenty of modules to do so
(2) It's a portable format
(3) It's a 30% growth in filesize rather than 100%
(ie, each 8 bits becomes 6 rather than 4)
(4) You can unpack the data with other utilities.
sample code ---
sub EncodeBase64
{
my $s = shift ;
my $r = '';
while( $s =~ /(.{1,45})/gs ){
chop( $r .= substr(pack(u,$1),1) );
}
my $pad=(3-length($s)%3)%3;
$r =~ tr|` -_|AA-Za-z0-9+/|;
$r=~s/.{$pad}$/=x$pad/e if $pad;
$r=~s/(.{1,72})/$1\n/g;
$r;
}
sub DecodeBase64
{
my $d = shift;
$d =~ tr!A-Za-z0-9+/!!cd;
$d =~ s/=+$//;
$d =~ tr!A-Za-z0-9+/! -_!;
my $r = '';
while( $d =~ /(.{1,60})/gs ){
my $len = chr(32 + length($1)*3/4);
$r .= unpack(u, $len . $1 );
}
$r;
}
my $binary_data = Hello\nThere..\b\b\n;
my $ascii = EncodeBase64( $binary_data );
print ASCII = $ascii.$/;
my $binary = DecodeBase64( $ascii );
print binary = $binary.$/;
snip --
Regards,
David le Blanc
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Email [EMAIL PROTECTED]
-Original Message-
From: Joel [mailto:[EMAIL PROTECTED]
Sent: Friday, 5 March 2004 10:57 AM
To: [EMAIL PROTECTED]; John W. Krahn
Subject: Re: perl hex editor
Thanks, that works perfectly. Now I just have to figure out
how to turn it
back into a valid file. I tried using pack 'b*' but I had
no luck. Any
suggestions?
Joel
- Original Message -
From: John W. Krahn [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, March 03, 2004 5:31 PM
Subject: Re: perl hex editor
Joel wrote:
I'm trying to write a program in perl that will take a
binary file,
convert
it to hex, then save it to a text file. So far I'm not
having any luck.
The
best I've been able to do is copy the file and open it in
a text editor.
Here is my code:
#!/usr/bin/perl
use warnings;
use strict;
print Enter path:\n;
my $filename = ;
chomp $filename;
print Save as what?\n;
my $savefile=;
chomp $savefile;
open (BINARY, $filename) || die Couldn't open file: $!;
binmode BINARY;
my $x=BINARY;
open (SAVE,$savefile) || die Unable to save: $!;
print SAVE 0b$x;
close BINARY;
close SAVE;
Any ideas?
Perhaps this is what you want:
#!/usr/bin/perl
use warnings;
use strict;
print 'Enter path: ';
chomp( my $filename = STDIN );
print 'Save as what? ';
chomp( my $savefile = STDIN );
open BINARY, '', $filename or die Couldn't open file: $!;
binmode BINARY;
open SAVE, '', $savefile or die Unable to save: $!;
while ( BINARY ) {
print SAVE unpack( 'H*', $_ ), \n;
}
close BINARY;
close SAVE;
__END__
John
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Re: perl hex editor
[ TOFU fixed ]
Joel wrote:
From: John W. Krahn [EMAIL PROTECTED]
Joel wrote:
I'm trying to write a program in perl that will take a binary file,
convert it to hex, then save it to a text file.
Perhaps this is what you want:
#!/usr/bin/perl
use warnings;
use strict;
print 'Enter path: ';
chomp( my $filename = STDIN );
print 'Save as what? ';
chomp( my $savefile = STDIN );
open BINARY, '', $filename or die Couldn't open file: $!;
binmode BINARY;
open SAVE, '', $savefile or die Unable to save: $!;
while ( BINARY ) {
print SAVE unpack( 'H*', $_ ), \n;
}
close BINARY;
close SAVE;
__END__
Thanks, that works perfectly. Now I just have to figure out how to turn it
back into a valid file. I tried using pack 'b*' but I had no luck. Any
suggestions?
while ( TEXT ) {
chomp;
print BINARY pack 'H*', $_;
}
John
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Re: Any way for Perl to write RTF within email as the body of an email without attachments
Wagner, David --- Senior Programmer Analyst --- WGO wrote: I am just trying to give my user what they asked for and they do not want any attachments. I was using what Jan K suggested, but obviously missing more than just a little bit. Wags ;) Sound like you're stuck with it. You might point out to your clients that RTF cannot hold viri, since, AFAIK, it doesn't contain macros. OTOH, using Outlook is sorta like holding your door wide open and inviting them in. In that case, I would default to the suggestion about Content-type. Here is how an attachment I sent from my work to personal email appeared: Content-Type: application/rtf; name=Resume_rjn.rtf Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename=Resume_rjn.rtf Change the above to: inline Content-Description: Rich-Text-Format Joseph -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: Cache::Filecache Question
Michael C. Davis wrote: Hi, I'm having trouble finding much documentation of namespaces as used with Cache::FileCache. I've read the CPAN page and it doesn't say much about that particular issue. Could anyone point me to anything more explanatory. My particular interest is in the relation between namespace and specific cache_root (directory location in the host's filesystem). A namespace is defined relative to a specific cache_root ... right? No. Perl namespaces do not relate to anything external to the language itself. Namespace systems within any external system are not related to the scoping of identifiers in Perl. If you are using the Cache::FileCache package, the package-level functions exorted by the package are available to you. Any object blessed into this package will have access to all methods defined in the package. Remember that anmespace is a general term which can be applied in different contexts. I get the impression that you are mixing the Perl namespace paradigm with the namespace paradigm of some completely different system. Can you be more specific about your issue? In other words, if I switch to a different cache_root then I'm talking about a whole different set of entries, even if the namespace identifier happens to have the same value? No. If you are still using Cache::FileCache to define those entries, they are still in the same Perl namespace. (Or does it somehow preserve keys relative to namespace, regardless of where the cache is preserved in the filesystem? That would be too wierd ... surely it wouldn't move a bunch of cached objects if I change the cache_root ... ) TIA. My suggestion would be to start thinking in terms of scope of identifier, rather than namespace when dealing with namespace issues in Perl. You are getting hung up on the word and making false connections, on the basis of shared terminology, between unrelated systems. Do not mix programming constructs with data content, even conceptually. Joseph -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: packages and variables
Ralf Schaa wrote: Cheers all, i am doing my first steps with writing packages/modules and of course there are problems: the module holds a variable in a subroutine. this variable i like to pass to the callerprogram, Dont. Just don't. Use good design in your program instead. Good design does not require having global variables. so it is in the @EXPORT_OK and even in the @EXPORT. So far so good, i thought! Export functions, not variables. Don't try to share variables between files, or even between functions and you will save yourself a lot of grief. Instead, learn how to pass arguments to functions, and how to use references to allow functions to access arrays, hashes, and objects. perldoc perlref perldoc perlsub perldoc perlmod perldoc perlobj but nothing happens when i run the caller-program... i tried also defining with 'my ..' , or without 'use strict' ... somebody has the clue? thanx -ralf If you explain what you are trying to accomplish, we can probably help you to use modules appropriately to accomplish the task. I would suggest that until you are ready to take on serious object-oriented design, you should focus on uisng subroutines well and passing arguments to and returning values from subroutines. Don't try to get around scoping restrictions. Work with them instead. The discipline they impose is very healthy, and will make your programs much more dependable. Joseph -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/ http://learn.perl.org/first-response
Re: problem in array accessing
N, Guruguhan (GEAE, Foreign National, EACOE) wrote:
Hi All,
I have written a perl code for filtering data contained in a file
($input_file_name) based on the filter expression($expr). While doing this, I face
some problems. When I hard code the arrays @data and @col
( in red color)
Please don't do that. HTML is filtered out of postings to this list, so anything that
relies on markup will be lost.
in the code, I am getting the results. But the moment I get the arrays @col and
@data based on the user input file ($input_file_name) inside the if loop, there is
no filter. The reason is @data array inside the if loop (red colored) when
accessed outside has only one value and that doesn't satisfy the filter expression.
Then I changed it look like the one given in blue color. Now I don't know how should
I modify
1. the sub routine sub filterdata
2. my @result array
3. print join function
All the three are highlighted in blue color.
Can some one please suggest me what changes I have to do, so that I can get the
results? Any help in this regard is solicited.
#! /usr/bin/perl -w
use strict; #- matter of style
Yes--do use strict, and no--it is not just amatter of style.
use warnings; #- and again
Likewise as above. Not just a matter of style, but a critical necessity if you wish
to learn how to write solid, orbust programs in Perl.
my (@col,@data,$input_file_name,@temp,$header,$data_line,$i);
Don't do this. Declaring all your variables in an unrelated lump defeats the purpose
of using strict. Declare your variables as close as possible to the place where they
are initialized.
$input_file_name= MC_data.dat;
if (-s $input_file_name ) {
open(INPUT, $input_file_name) || die Cannot open: \nReason: $!\n;
Don't indent here. Indentation should mark execution blocks. The flow of execution
does not change here, so all lines within this if statement should be vertically
aligned.
@temp = INPUT ;
Here is your immediate problem. The line above puts the first line of the file into
the first element of @temp. If you must dump all your data into an array, then you
will have to put the input operation into list context by enclosing it in parentheses:
@temp = (INPUT);
chomp @temp;
$header = shift(@temp);
$header =~ s/^\s+(.*)/$1/; #Remove the leading white spaces
@col = split /\s+/, $header;
foreach $i ( 0 .. $#temp ) {
Do indent here. Everything within this for loop should be indented by however many
spaces you are using as standard indentation. Indent after the opening brace.
Unindent the line that holds the closing brace.
perldoc perlstyle
$data_line = $temp[$i];
$data_line =~ s/^\s+(.*)/$1/; #Remove the leading white spaces
@data = split /\s+/, $data_line;
@data, huh? Is there anything you would be processing that is not data?!? Use
variable names that mean something.
$data[$i] = split /\s+/, $data_line;
}
}
@col = qw (RUN a1 a2 a3 weight sig1 sig2 sig3);
@data=(
[qw( 1 0.20 0.20 0.20 0.76568575881.9
29289.3 -46592.6)],
Why qw? These all look like numbers to me. Much more clear to write:
[1, 0.2, 0.2, 0.2, 0.765685,75881.9, 29289.3, -46592.6],
Unless there is some very good reason why these *must* be stored as character strings
rather than numbers.
[qw( 2 0.200345 0.20 0.200345 0.9175766.0
29268.4 -46497.6)],
[qw( 3 0.20 0.200345 0.20 0.76603075867.1
29259.8 -46607.4)],
[qw( 4 0.359575 0.253987 0.359575 1.27101943898.7
19675.6 -24223.1)],
[qw( 5 0.359921 0.253987 0.359921 1.27199543861.3
19666.1 -24195.2)]
);
map
What array is being assigned the return value of map? If you are not trying to return
an array, map is not an appropriate tool. You should probably be using a for loop to
iterate through the array.
{ my $i=$_;
What are you doing with $r? Where are you using it? Please don't assign things to
variables that then vanish into thin air.
no strict 'refs'; *{filter::$col[$i]} = sub{$_-[$i]} }
This probably does something. It's really not worth it to try to figure out what,
though. Do you understand what it is doing? If you do not, then don't use it. Hint:
if you have to turn strict off, you probably are doing something that will be
undependable.
Calling well-constructed subroutines is much more simple and clear than this
filterdata($validation_function_ref, @lines_to_be_tested);
0..$#col;
sub filterdata
{
my $cref=shift;
grep $cref,@_
}
sub filterspec
{
my $e = shift;
map{ $e =~ s/\b$_\b/filter::$_()/g } @col;
eval sub{ $e }
}
my $expr = weight 1.2 sig1 75800;
my $filter_handler = filterspec( $expr ) or die $@;
my
