[net.unix-wizards] #!

ark (10/30/82)

The "#!" hack in the 4BSD kernel could not have been done in the Shell.
Consider, with this change it is possible to put #!/bin/sh in the
first line of a file, set the setuid bit, and have the effect of a
setuid shell script.  This could only be accomplished in the Shell
by making the Shell a super-user program -- surely a poor idea.