laptop:~> setenv PERL5LIB /perl5lib/env/var
laptop:~> perl -V -I /dash/I | tail -15
  Built under linux
  Compiled at Apr  4 2004 05:57:53
  %ENV:
    PERL5LIB="/perl5lib/env/var"
  @INC:
    /dash/I
    /perl5lib/env/var
    /usr/local/lib/perl/5.6.1
    /usr/local/share/perl/5.6.1
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.6.1
    /usr/share/perl/5.6.1
    /usr/local/lib/site_perl
    .