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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.unix.questions
Subject: Re: /dev/ttyxx permissions
Message-ID: <14579@smoke.brl.mil>
Date: 26 Nov 90 22:16:16 GMT
References: <25090@adm.brl.mil>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 6

In article <25090@adm.brl.mil> sct60a.sunyct.edu!buck@sct60a.sunyct.edu (Jesse R. Buckley Jr.) writes:
>        Does anybody know is the permissions on a tty have any importance
>(besides the read and write ones of course)?

Some systems use the x bits to indicate whether or not "breakthrough writes"
(e.g. "wall", "write", "talk") are permitted on that tty.