Plan 9 from Bell Labs’s /usr/web/sources/contrib/gabidiaz/root/sys/src/cmd/perl/lib/Filter/Simple
--rw-rw-r-- gabidiaz sys 1891 Nov 25 2002 Changes --rw-rw-r-- gabidiaz sys 1675 Nov 25 2002 README d-rwxrwxr-x gabidiaz sys 0 Jul 15 2018 t