From: utzoo!decvax!harpo!npois!cbosgd!mark Newsgroups: net.unix-wizards Title: Re: extraneous csh prompts Article-I.D.: cbosgd.2403 Posted: Tue Jun 22 20:43:01 1982 Received: Sun Jun 27 03:30:36 1982 References: floyd.302 Andy has an interesting idea. It ought to be trivial for the su command to, instead of exec'ing a subshell, to scribble on /dev/kmem to make itself a new uid. Then to get back you would have to do another su, or maybe have an alias for it or have a link "unsu" for going back. Has anybody out there tried this, with good or bad results? Seems to me that, in addition to the history advantage Andy cites (how many times have you tried to do something, have the system deny permission, su, and have to type it in again?) it should be faster (no .cshrc or hashing for the shell). It would be harder to toggle back and forth, however, than using "suspend" and "%su". Maybe it could set a bit in the proc table someplace so you wouldn't have to give the password again. Mark