Plan 9 from User Space /usr/local/plan9/src/cmd/disk

--rw-r--r-- M 0  glenda sys  5827 Mar 23 20:59 mkext.c
--rw-r--r-- M 0  glenda sys    78 Mar 23 20:59 mkfile
--rw-r--r-- M 0  glenda sys 14332 Mar 23 20:59 mkfs.c