In Perl, what is the difference between a .pm (Perl module) and .pl (Perl script) file?

At the very core, the file extension you use makes no difference as to how perl interprets those files. However, putting modules in .pm files following a certain directory structure that follows the package name provides a convenience. So, if you have a module Example::Plot::FourD and you put it in a directory Example/Plot/FourD.pm in a … Read more

How is Perl’s @INC constructed? (aka What are all the ways of affecting where Perl modules are searched for?)

We will look at how the contents of this array are constructed and can be manipulated to affect where the Perl interpreter will find the module files. Default @INC Perl interpreter is compiled with a specific @INC default value. To find out this value, run env -i perl -V command (env -i ignores the PERL5LIB … Read more

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