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May 19, 2015 - A Look At The New Commandlinefu
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Functions

Find out if a module is installed in perl

Terminal - Find out if a module is installed in perl
module_exists(){ perl -e 'use '$1 2>/dev/null; }
2013-01-11 14:47:07
User: putnamhill
Functions: perl
-2
Up
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Find out if a module is installed in perl

This version uses a bash function and does not print the path to the module.

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Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
perldoc -l Module::Name 2>/dev/null
2013-01-11 23:28:13
User: MarxBro
Tags: bash perl
4
Up
Down
Find out if a module is installed in perl

Shows the path if the module is installed or exit quietly (to simply avoid the 'No documentation found' msg).

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perl -MModule::Name\ 9999 -e 1
2013-01-15 22:51:39
User: three18ti
Functions: perl
Tags: bash perl zsh
-1
Up
Down
Find out if a module is installed in perl (and what version)

This attempts to load a Perl Module (-M flag) and use version 9999, since no module has a version this high, Perl exits either a) telling you the version of the module installed or b) tells you it can't find the module.

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perl -MFile::Find=find -MFile::Spec::Functions -Tlwe '$found=1; find { wanted => sub { if (/$ARGV[0]\.pm\z/) { print canonpath $_; $found=0; } }, no_chdir => 1 }, @INC; exit $found;' Collectd/Plugins/Graphite
2013-01-11 11:01:46
User: keymon
Functions: exit find perl
-2
Up
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Find out if a module is installed in perl

Will check if the given module is installed in the @INC. It will print the path and return 0 if found, or 1 otherwise.

Based on script from SharpyWarpy in http://www.linuxquestions.org/questions/linux-general-1/how-to-list-all-installed-perl-modules-216603/

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