"Ed" is a line-oriented text editor.  It is used to create, display,
modify and otherwise manipulate text files.  "Red" is a restricted ed:
it can only edit files in the current directory and cannot execute
shell commands.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
-rw-rw-r-- 20025/200    217736  942080  23.1% -lh5- 133a Mar 30  1998 ed-0.2-src.tar
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file   217736  942080  23.1%            Mar 16  1998