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Wednesday, November 19, 2014

One line script to list all the perl modules already installed on your server

Just copy and paste the command below into your command prompt:

perl -MFile::Find=find -MFile::Spec::Functions -Tlwe 'find { wanted => sub { print canonpath $_ if /\.pm\z/ }, no_chdir => 1 }, @INC'

If used with grep, you can easily search through the list to confirm if your already have a certain perl module installed on your server or not! for example am looking for a Perl module named "Time::HiRes", so i run the command below:

perl -MFile::Find=find -MFile::Spec::Functions -Tlwe 'find { wanted => sub { print canonpath $_ if /\.pm\z/ }, no_chdir => 1 }, @INC' | grep Time

/usr/lib64/perl5/Time/Piece.pm
/usr/lib64/perl5/Time/HiRes.pm
/usr/lib64/perl5/Time/Seconds.pm
/usr/share/perl5/Net/Time.pm
/usr/share/perl5/CPAN/FirstTime.pm
/usr/share/perl5/Time/Local.pm
/usr/share/perl5/Time/tm.pm
/usr/share/perl5/Time/localtime.pm
/usr/share/perl5/Time/gmtime.pm

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