PERLLIB to add
non-standard locations of *.pl, *.pm files
to perl's library search path.
At some central place put e.g.:
export PERLLIB=/opt/perl-5.6.1/lib:/opt/perl-5.6.1/lib/PA-RISC2.0 # HP-UX 11.x export PERLLIB=/opt/perl5.004_04/lib:/opt/perl5.004_04/lib/PA-RISC1.1:/opt/perl5.004_04/lib/PA-RISC1.1/5.00404