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    146432  491520  29.8% -lh5- f072 Mar 30  1998 patch-2.4-src.tar
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file   146432  491520  29.8%            Mar 16  1998