% perl -le 'print for @INC'

  /usr/local/perllibs
  /usr/local/lib/perl5/5.6.1/i586-linux
  /usr/local/lib/perl5/5.6.1
  /usr/local/lib/perl5/site_perl/5.6.1/i586-linux
  /usr/local/lib/perl5/site_perl/5.6.1
  /usr/local/lib/perl5/site_perl
  .