Perl one liner to display module version info

Posted on October 9, 2011 by rohan

I use this Perl one-liner to display the version number of a module. This module should be available in your @INC paths.

If I need to know the version of CGI.pm

$ perl -MCGI -e ‘print “$CGI::VERSION\n”‘
3.29

I created a shell script so that I can just type the module name.

$ cat pm_version.sh
#!/bin/sh
MODULE=$1
perl -M$MODULE -e ‘print “$’$MODULE’::VERSION\n”‘

So now, I can do this.

$ pm_version.sh Google::Adwords
v1.13

2 thoughts on “Perl one liner to display module version info”

jmb on October 10, 2011 at 9:04 am said:

Thanks for sharing the script. I would just like you to know that there is a more “standard” solution from this, within Perl, which additionally presents the advantage of being platform-independant. It is the Module::Info, installable from CPAN.

http://search.cpan.org/search?query=Module::Info

This module installs a script named module_info. Here is a demo, under Windows:

“> c:>module_info Catalyst”
” ”
“Name: Catalyst”
“Version: 5.7014″
“Directory: D:\perl\site\lib”
“File: D:\perl\site\lib\Catalyst.pm”
“Core module: no”

Reply ↓
rohan on October 10, 2011 at 9:13 am said:

Thanks for letting me know about Module::Info

Reply ↓