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lib - Add module search path

The lib module allows you to add a search path for a module. 

# Add module search path
use lib 'home/user/local/lib';

In Perl, list of module search paths is stored in the predefined variable "@INC", but the lib module is at the beginning of @INC at compile time. Add the search path to. 

# lib module adds path to the beginning of @INC
BEGIN {
  unshift @INC, '/ home/user/local/lib';
}

The lib module is often used in combination with FindBin module. This is an example to add a directory called lib in the directory where the script exists to the module search path. 

# Add the lib directory of the directory where the script exists to the search path
use FindBin;
use lib "$FindBin::Bin/lib";

FAQ about lib module

Q. Is there a way to add a module search path other than the lib module?

A. Yes. You can either set PERL5LIB environment variable or specify the -I option when starting the script. The lib module is the most flexible, but it's tightly coupled with scripts and less portable. Think about which method is best for your situation.

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