Patch will take a patch file containing any of the four forms of
difference listing produced by the diff program and apply those
differences to an original file, producing a patched version.  By
default, the patched version is put in place of the original, with the
original file backed up to another name.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
-rw-rw-r-- 20025/200     56489  122880  46.0% -lh5- 81b6 Mar 30  1998 patch-2.4-bin.tar
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file    56489  122880  46.0%            Mar 16  1998