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

--rwxr-xr-x M 0  glenda sys  535 Mar 23 20:59 isspam*
--rwxr-xr-x M 0  glenda sys 1084 Mar 23 20:59 msgcat*
--rwxr-xr-x M 0  glenda sys  386 Mar 23 20:59 spam*
--rwxr-xr-x M 0  glenda sys  282 Mar 23 20:59 spambox*
--rwxr-xr-x M 0  glenda sys  390 Mar 23 20:59 unspam*
--rwxr-xr-x M 0  glenda sys  286 Mar 23 20:59 unspambox*