##
# locate /lib.pm
/root/.cpan/build/local-lib-1.008004-GOPHT9/blib/lib/local/lib.pm
/root/.cpan/build/local-lib-1.008004-GOPHT9/lib/local/lib.pm
/usr/lib64/perl5/lib.pm
##
##
$ echo $PERL5LIB
/root/perl5/lib/perl5/x86_64-linux-thread-multi:/root/perl5/lib/perl5
# ls -l /root/perl5
ls: cannot access /root/perl5: No such file or directory