• ~/abc/moo.pl
• ~/abc/cow.pm
• ~/zyx/cow.pm
• current directory is ~/zyx

moo.pl has:

• use cow
• use lib 'cow'

When i execute moo.pl, . is set to ~/zyx, so:

• use cow means ~/zyx/cow.pm
• use lib 'cow' means ~/abc/cow.pm

Did i get it right that, basically, there is a difference between the "current" directory and the directory of the pl file. Or, put another way, if i keep all my project files in the same directory, like we do during development, and the directory may change, and the directory i execute it from may change, "use lib" will work "as expected".