kristian@gate2:~/Progs/qed> export PERL5LIB=/foo

kristian@gate2:~/Progs/qed> perl -wle 'print join("\n",@INC);'
/foo
/usr/local/lib/perl5/5.8.5/i686-linux
/usr/local/lib/perl5/5.8.5
/usr/local/lib/perl5/site_perl/5.8.5/i686-linux
/usr/local/lib/perl5/site_perl/5.8.5
/usr/local/lib/perl5/site_perl
.