Current Perl documentation can be found at perldoc.perl.org.
Here is our local, out-dated (pre-5.6) version:
Here are the suggested ways of modifying your include path:
the PERLLIB environment variable the PERL5LIB environment variable the perl -Idir commpand line flag the use lib pragma, as in use lib "$ENV{HOME}/myown_perllib";
The latter is particularly useful because it knows about machine dependent architectures. The lib.pm pragmatic module was first included with the 5.002 release of Perl.