Plan 9 from User Space /usr/local/plan9/bin/upas

--rwxr-xr-x M 0  glenda sys  535 Jun 15 10:57 isspam*
--rwxr-xr-x M 0  glenda sys 1084 Jun 15 10:57 msgcat*
--rwxr-xr-x M 0  glenda sys  386 Jun 15 10:57 spam*
--rwxr-xr-x M 0  glenda sys  282 Jun 15 10:57 spambox*
--rwxr-xr-x M 0  glenda sys  390 Jun 15 10:57 unspam*
--rwxr-xr-x M 0  glenda sys  286 Jun 15 10:57 unspambox*