Aucbarpa.120
NET.unix-wizards
utzoo!decvax!ucbvax!arpavax:wnj
Thu Aug 13 14:19:20 1981
Re: Setuid shell files
The current 4.1bsd system for VAXes includes a mechanism initially
implemented at Bell Labs (after version 7) which allows a file to
be executable and start with a line:
#! interpreter
where interpreter might be /bin/sh, e.g.
#! /bin/sh
The file is then a ``true executable'', i.e. an exec() succeeds on
it in the obvious way, and the system interprets setuid and setgid
bits on the file.
Bill Joy
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