How can I find the version of an installed Perl mo

Question

How do you find the version of an installed Perl module?

This is in an answer down at the bottom, but I figure it important enough to live up here. With these suggestions, I create a function in my .bashrc

function perlmodver {
    perl -M$1 -e 'print "Version " . $ARGV[0]->VERSION . " of " . $ARGV[0] . \
    " is installed.\n"' $1
}

Answer 1

VERSION is a UNIVERSAL method of all Perl classes. You can use it to get the module version (if it has been set which it usually has).

Here is a one liner where you only have to add the module name once:

perl -le 'eval "require $ARGV[0]" and print $ARGV[0]->VERSION' Some::Module

Answer 2

Easiest to remember and most robust version for me:

perl -e 'use Search::Elasticsearch; print $Search::Elasticsearch::VERSION;'

Answer 3

Thanks for the answers! I've created a function in my .bashrc to easily find the version of a Perl module:

function perlmodver {
    perl -M$1 -e 'print $ARGV[0]->VERSION . "\n"' $1
} 

Answer 4

We have the system perl (/usr/bin/perl) in Solaris 10, and above solutions are useless. Some of them report "module.pm is not installed", some of them have no output.

Here is the code which is helpful, which can list all modules and their version.

#!/usr/bin/perl

use strict;
use ExtUtils::Installed;

my @modules;
my $installed = ExtUtils::Installed->new();

if (scalar(@ARGV) > 0) {

    @modules = @ARGV;

} else {

    @modules = $installed->modules();

}

print "Module\tVersion\n";

foreach (@modules) {

    print $_ . "\t" . $installed->version($_) . "\n";

}

Answer 5

You can also take a look at App::module::version

$ module-version

The version of App::module::version in /home/yourself/perl5/lib/perl5 is 1.004

Answer 6

Check out the pmtools scripts on CPAN. If you're using a Debian(-based) distro, there's also a handy pmtools package. This includes a script "pmvers" that tells you a module's version. It's quite handy.

It does something similar to the various one-liners folks posted, but it's a bit smarter about error handling, and can give you the version of more than one module at once.