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Full Discussion: Perl script 'system' linking to local shell script not working
Top Forums Shell Programming and Scripting Perl script 'system' linking to local shell script not working Post 302362415 by pludi on Friday 16th of October 2009 02:53:14 AM
Old 10-16-2009
$? is a variable that holds the return code of the last system command, pipes, ..., pretty much the same as in the shell. By inspecting that you can check if your command succeded or not.

As for your 'hellow' script, your user might have the path to it in it's environment. But the user the webserver is running as (www) most probably doesn't. So it's always a good idea to use the absolute path, and ensure that the user 'www' has read & execute rights on the file. If you still have problems, add the 'holy trinity' to your script, and run it on the command line.
Code:
# The 'holy trinity'
use strict;
use warnings;
use diagnostics;

As for Perl spinning out of control: it might have to do with the unchecked open. I left out the success check in my examples for brevity, but you should always check the return code of it.
 

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LEARN ABOUT DEBIAN

pmpath

PMPATH(1p)						User Contributed Perl Documentation						PMPATH(1p)

NAME

       pmpath - show full path to a perl module

SYNOPSIS

       pmpath module ...

DESCRIPTION

       For each module name given as an argument, produces its full path on the standard output, one per line.

EXAMPLES

	   $ pmpath CGI
	   /usr/local/devperl/lib/5.00554/CGI.pm

	   $ filsperl -S pmpath IO::Socket CGI::Carp
	   /usr/local/filsperl/lib/5.00554/i686-linux-thread/IO/Socket.pm
	   /usr/local/filsperl/lib/5.00554/CGI/Carp.pm

	   $ oldperl -S pmpath CGI CGI::Imagemap
	   /usr/lib/perl5/CGI.pm
	   /usr/lib/perl5/site_perl/CGI/Imagemap.pm

SEE ALSO

       pmdesc(1), pmvers(1), pmcat(1).

AUTHORS and COPYRIGHTS
       Copyright (C) 1999 Tom Christiansen.

       Copyright (C) 2006-2008 Mark Leighton Fisher.

       This is free software; you can redistribute it and/or modify it under the terms of either: (a) the GNU General Public License as published
       by the Free Software Foundation; either version 1, or (at your option) any later version, or (b) the Perl "Artistic License".  (This is the
       Perl 5 licensing scheme.)

       Please note this is a change from the original pmtools-1.00 (still available on CPAN), as pmtools-1.00 were licensed only under the Perl
       "Artistic License".

perl v5.10.1							    2010-02-22								PMPATH(1p)
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