Guide to the PERL programing language

Perl is a very useful scripting language, but a very confusing one. The is an adage, Perl is a write only language, because it is quick to write a script but very hard to read.

=Basics=
 * Howto open a file using PERL
 * Howto make substitutions in strings using PERL

=Modules=
 * Howto install PERL modules

=Other=
 * Howto find the contents of a directory using PERL