Perl uses @INC to find modules, so a module should be able to use @INC to find itself.

For a program to find itself, examining the value of $0 in the context of (a) the current working directory and (b)the value of $ENV{PATH}, might locate the running program.

Update: Added sample code.

use warnings;
use strict;
package My::Mod;
use File::Spec;
use Carp;
my $module = File::Spec->catfile(split('::', __PACKAGE__));
my $modPath;
for (@INC) {
    my $t = File::Spec->catfile($_, $module);
    if ( -e $t ) {
        $modPath = $t;
        last;
    }
}
my $configPath = $modPath;
if ($modPath) {
    $configPath =~ s/\.pm$/.yml/;
}
else {
    croak("Can't find config file.");
}

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In reply to Re: Help with Best Practices for Module Paths when scripting across multiple machines by RonW
in thread Help with Best Practices for Module Paths when scripting across multiple machines by mwb613

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