Re: mech-content match regex howto
raphael() wrote: ( my $ip ) = $last_page =~ m/[\d.]+/g The \d matches 200+ codepoints, so if you want to match only 0-9, then use [0-9.]. -- Ruud -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: mech-content match regex howto
On Wed, Mar 3, 2010 at 4:17 AM, Dr.Ruud rvtol+use...@isolution.nlrvtol%2buse...@isolution.nl wrote: raphael() wrote: ( my $ip ) = $last_page =~ m/[\d.]+/g The \d matches 200+ codepoints, so if you want to match only 0-9, then use [0-9.]. -- Ruud -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/ Thanks for the advice. [0-9.] it is.
Re: File::Find NO RECURSION Howto
On Monday 01 Mar 2010 19:31:15 Shawn H Corey wrote: Shlomi Fish wrote: Well, Matt S. Trout shared his sentiments about I cannot use CPAN here: http://www.shadowcat.co.uk/blog/matt-s-trout/but-i-cant-use-cpan/ Well, Matt is wrong. You can't always use CPAN. Yes, you can set it up so you can use it in development, but that doesn't mean you can do it in production. I have worked in places where the policy was no software that's not approved by the sysadmins and approval of a single module may take 6 to 18 months. They're even very strict about downloading a copy and cut paste. A foolish policy, kinda like, our horse will never get sick from bad grain if we never feed it but managers _always_ know best. ;) Heh, tell me about it. Medium-to-large businesses shoot themselves in the foot by incorporating these god-awful policies and becoming very non-agile. Then they wonder why startups with much fewer resources can often easily out- compete them. I read somewhere (Paul Graham I think, but I can no longer find it) that as companies grow they adopt more and more rules and regulations after learning from mistakes they made in the past. But these rules prevent a lot of legitimate actions and in turn make the company much less agile. And sometimes they impose these rules on start-ups that they buy. It was later compared to http://en.wikipedia.org/wiki/Sarbanes%E2%80%93Oxley_Act which killed the IPOs in .us and was another regulation that was passed and which had unwanted side- effects. In any case, such antagonism towards using third-party code will make the person working for such companies beyond help and doomed anyway you look at it, so we can ignore it. Regards, Shlomi Fish -- - Shlomi Fish http://www.shlomifish.org/ Understand what Open Source is - http://shlom.in/oss-fs Deletionists delete Wikipedia articles that they consider lame. Chuck Norris deletes deletionists whom he considers lame. Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Copy files from one machine to another machine
Hi all, I need to copy files from one machine to another machine. I need to use Net::SCP module . Can you please give/help me small Perl snippet which will copy the files Please advice Regards Irfan.
Re: Controlling one process depending on the status of another
On Feb 26, 2010, at 10:34 PM, Eric Veith1 wrote: Dear list, I'm wrinting a perl program that works with different threads. Your first sentence already has me worried. Threads are un-fun. Those threads depend on each other, not all in the same way. Some threads should stop when others are finished with their work, and again others are to be started afterwards. Now getting really complex. I have six worker machines, M1 to M6, and a controller machine, M0. The perl program runs on the controller machine. This program is basically a dispatcher I control from a command line interface. A command causes two threads to be started, say on M1 and M2. At this point, these are really processes. Threads are in the kernel, you are just starting a separate process on two different machines. One thread on M1 produces work, the other on M2 plots the network traffic. When M1 is finished, I want the thread M0 that caused the workload to signal to the dispatcher that M1 is finished. The dispatcher then shall signal M2 to stop monitoring. Afterwards, I want the results from both M1 and M2, preferably in form of a perl structure. These are all separate processes, not threads. Are you sure you need to use threads? In general a thread is something that runs _inside_ a process. http://en.wikipedia.org/wiki/Thread_(computer_science) First of all, is that possible? Yes. Not that hard. You have exit values from your process so you can trap that and do something based on your exit value. I have already looked at threads, threads::shared and the traditional fork(). With the standard IPC stuff, I'm able to signal and trap that in the master process with a signal handler. But I cannot, however, get the PID of the child that emitted the signal, thus I'm not able to send a SIGTERM to another process. I'm also not sure how I could get my result data. Well, why not just create something in a perl structure and just use something like the Storable module or YAML to dump it to disk and you can read it from your other machine. threads::shared allows me to share a perl structure I could fill, but I don't know how to signal the master thread. Passing a subroutine reference doesn't work, of other options I don't know. I'd very much appreciate any hints. I would avoid threads. I would have a program / process on machine 0 that fires off another program / process on machine 1. Then I guess you need to fire off your program on machine 2 to do network monitoring (?). When the program on 1 is finished, it dumps its data to disk and call machine 0 who in turn calls 2. Jeremiah -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
RE: Controlling one process depending on the status of another
From: Jeremiah Foster On Feb 26, 2010, at 10:34 PM, Eric Veith1 wrote: I'm wrinting a perl program that works with different threads. Your first sentence already has me worried. Threads are un-fun. Those threads depend on each other, not all in the same way. Some threads should stop when others are finished with their work, and again others are to be started afterwards. Now getting really complex. I have six worker machines, M1 to M6, and a controller machine, M0. The perl program runs on the controller machine. This program is basically a dispatcher I control from a command line interface. A command causes two threads to be started, say on M1 and M2. At this point, these are really processes. Threads are in the kernel, you are just starting a separate process on two different machines. One thread on M1 produces work, the other on M2 plots the network traffic. When M1 is finished, I want the thread M0 that caused the workload to signal to the dispatcher that M1 is finished. The dispatcher then shall signal M2 to stop monitoring. Afterwards, I want the results from both M1 and M2, preferably in form of a perl structure. These are all separate processes, not threads. Are you sure you need to use threads? In general a thread is something that runs _inside_ a process. http://en.wikipedia.org/wiki/Thread_(computer_science) First of all, is that possible? Yes. Not that hard. You have exit values from your process so you can trap that and do something based on your exit value. I have already looked at threads, threads::shared and the traditional fork(). With the standard IPC stuff, I'm able to signal and trap that in the master process with a signal handler. But I cannot, however, get the PID of the child that emitted the signal, thus I'm not able to send a SIGTERM to another process. I'm also not sure how I could get my result data. Well, why not just create something in a perl structure and just use something like the Storable module or YAML to dump it to disk and you can read it from your other machine. threads::shared allows me to share a perl structure I could fill, but I don't know how to signal the master thread. Passing a subroutine reference doesn't work, of other options I don't know. I'd very much appreciate any hints. I would avoid threads. I would have a program / process on machine 0 that fires off another program / process on machine 1. Then I guess you need to fire off your program on machine 2 to do network monitoring (?). When the program on 1 is finished, it dumps its data to disk and call machine 0 who in turn calls 2. Depending on how much control you have over development of this package, I would suggest a hybrid approach. First, launch an application which creates multiple threads to start up the individual processes. Open a communications channel between each thread and the process it called. Then use the threads to monitor and/or control the individual processes until they terminate. Once the process is done, terminate the matching thread. When processes run on the local machine, any of the IPC options can be used for the comm channel. On remote machines it is more likely to be a socket. Interprocess communications can be done either via IPC or relayed through the control threads. However, if the application is this complex, is Perl really the best language to use? It would not be my first choice. Bob McConnell -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: Copy files from one machine to another machine
On Wed, Mar 3, 2010 at 8:40 PM, Irfan Sayed irfan_sayed2...@yahoo.com wrote: Hi all, I need to copy files from one machine to another machine. I need to use Net::SCP module . Can you please give/help me small Perl snippet which will copy the files I was thinking this module's document has already given the examples. http://search.cpan.org/~ivan/Net-SCP-0.08/SCP.pm -- Jeff Peng Email: jeffp...@netzero.net Skype: compuperson -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
parsing numbers from grep
Hi there,
is there a way to easily just get the number itself saved into an array?
i dont need the 'link' text.
if (@ARGV) {
@link_numbers = grep(/^link([0-9]+)/,@ARGV);
}
Cheers,
Noah
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Re: parsing numbers from grep
N == Noah noah-l...@enabled.com writes:
N Hi there,
N is there a way to easily just get the number itself saved into an
N array? i dont need the 'link' text.
N if (@ARGV) {
N @link_numbers = grep(/^link([0-9]+)/,@ARGV);
N }
just change grep to map and it should work. grep only returns a subset
of its input list. map returns any list it generates given an input
list. in the above code the regex in list mode will return the grabbed
numbers and that is returned by map.
uri
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Re: parsing numbers from grep
Noah wrote:
Hi there,
is there a way to easily just get the number itself saved into an array?
i dont need the 'link' text.
if (@ARGV) {
@link_numbers = grep(/^link([0-9]+)/,@ARGV);
}
Use the block form:
if (@ARGV) {
@link_numbers = grep { /^link([0-9]+)/; $_ = $1; } @ARGV;
}
Doesn't work with link0.
--
Just my 0.0002 million dollars worth,
Shawn
Programming is as much about organization and communication
as it is about coding.
I like Perl; it's the only language where you can bless your
thingy.
Eliminate software piracy: use only FLOSS.
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Re: parsing numbers from grep
SHC == Shawn H Corey shawnhco...@gmail.com writes:
SHC Noah wrote:
Hi there,
is there a way to easily just get the number itself saved into an array?
i dont need the 'link' text.
if (@ARGV) {
@link_numbers = grep(/^link([0-9]+)/,@ARGV);
}
SHC Use the block form:
SHC if (@ARGV) {
SHC @link_numbers = grep { /^link([0-9]+)/; $_ = $1; } @ARGV;
SHC }
that modifies @ARGV so it is a bad idea. also it bypasses grep's purpose
of filtering a list. and as i posted, map is the correct solution
SHC Doesn't work with link0.
another reason to not use this solution.
uri
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Re: parsing numbers from grep
Uri Guttman wrote: that modifies @ARGV so it is a bad idea. also it bypasses grep's purpose of filtering a list. and as i posted, map is the correct solution map is not the correct solution since it does not filter out those which do not match the pattern. Only grep can do that. -- Just my 0.0002 million dollars worth, Shawn Programming is as much about organization and communication as it is about coding. I like Perl; it's the only language where you can bless your thingy. Eliminate software piracy: use only FLOSS. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
Re: parsing numbers from grep
Shawn H Corey wrote:
Uri Guttman wrote:
that modifies @ARGV so it is a bad idea. also it bypasses grep's purpose
of filtering a list. and as i posted, map is the correct solution
map is not the correct solution since it does not filter out those which
do not match the pattern. Only grep can do that.
Did you actually try it? I didn't think so.
$ perl -le'
@ARGV = map link$_, 0, 1, xx, [], 666, 99, -5;
print \...@argv = @ARGV;
my @link_numbers = grep { /^link([0-9]+)/; $_ = $1; } @ARGV;
print \...@argv = @ARGV\n . @link_numbers . : @link_numbers;
'
@ARGV = link0 link1 linkxx link[] link666 link99 link-5
@ARGV = 0 1 666 99
3: 1 666 99
$ perl -le'
@ARGV = map link$_, 0, 1, xx, [], 666, 99, -5;
print \...@argv = @ARGV;
my @link_numbers = map /^link([0-9]+)/, @ARGV;
print \...@argv = @ARGV\n . @link_numbers . : @link_numbers;
'
@ARGV = link0 link1 linkxx link[] link666 link99 link-5
@ARGV = link0 link1 linkxx link[] link666 link99 link-5
4: 0 1 666 99
John
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destructive forces in the universe: entropy and
human stupidity. -- Damian Conway
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Re: parsing numbers from grep
SHC == Shawn H Corey shawnhco...@gmail.com writes: SHC Uri Guttman wrote: that modifies @ARGV so it is a bad idea. also it bypasses grep's purpose of filtering a list. and as i posted, map is the correct solution SHC map is not the correct solution since it does not filter out those which SHC do not match the pattern. Only grep can do that. map will return what is grabbed in $1. if the pattern doesn't match, nothing is grabbed so it will not return anything for that list element. perl -le 'print join -, map /x(\d+)/, qw(x123 y123 x x234)' 123-234 just what the doctor ordered! :) uri -- Uri Guttman -- u...@stemsystems.com http://www.sysarch.com -- - Perl Code Review , Architecture, Development, Training, Support -- - Gourmet Hot Cocoa Mix http://bestfriendscocoa.com - -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
