SetSystem is a very small and simple 2.04-only utility which forces the
SYS_UserShell tag on each System() call. This means that every application
will use your user shell (for instance, Bill Hawes's WShell) instead of the
system shell.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  471     668  70.5% -lh5- 2690 Oct 19  1992 SetSystem
[generic]                  801    1506  53.2% -lh5- a0ee Oct 19  1992 SetSystem.doc
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         2 files    1272    2174  58.5%            Nov 23  1992