How do I find out Perl version by running a cgi script from a webbrowser? How do I find out Perl version from a command prompt under Windows OR Linux / UNIX OR Apple MAC OS X operating systems?
Perl is acronym for Practical Extraction and Report Language. It is a general-purpose programming language invented in 1987 by Larry Wall. Originally developed for text manipulation. Perl has become extremely popular and is now used for a wide range of tasks, including web development and interface design.
Find Perl Version From a Linux / Unix / BSD / OS X Shell Prompt
If you have access to a shell prompt (UNIX/Linux) type the following command to find out perl version:
$ perl -v
This is perl, v5.10.1 (*) built for x86_64-linux-gnu-thread-multi(with 53 registered patches, see perl -V for more detail) Copyright 1987-2009, Larry Wall Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at http://www.perl.org/, the Perl Home Page.
You can also type above command under Windows / Mac OS X by opening terminal.
Find Perl Version Using a CGI Script
If your web hosting provider don't provide access to a shell, use the following perl program to find out perl version:
Short version that avoid starting a new process (see below in comments):
#!/usr/bin/perl $command= $]; $title = "Perl Version"; print "Content-type: text/html\n\n"; print "<html><head><title>$title</title></head><body>"; print "<h1>$title</h1>\n"; print "Perl version : ".$command;
source code - version.pl (download link)
The following code provides a little bit more information:
#!/usr/bin/perl # Available under BSD License. # See url http://www.cyberciti.biz/faq/how-can-i-find-out-perl-version/ $command=`perl -v`; $title = "Perl Version"; print "Content-type: text/html\n\n"; print "<html><head><title>$title</title></head><body>"; print "<h1>$title</h1>\n"; print '<pre>'; print $command; print '</pre>'; print "</body></html>";
Upload script to your cgi-bin directory and execute script by typing url http://mydomain.com/cgi-bin/version.pl