Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site watmath.UUCP Path: utzoo!watmath!idallen From: idallen@watmath.UUCP Newsgroups: net.unix-wizards Subject: Re: Suppressing messages from CSH shell; bug in 4.2 sub-shells Message-ID: <6950@watmath.UUCP> Date: Sun, 19-Feb-84 18:51:32 EST Article-I.D.: watmath.6950 Posted: Sun Feb 19 18:51:32 1984 Date-Received: Mon, 20-Feb-84 07:21:26 EST References: <137@pwa-b.UUCP> Organization: U of Waterloo, Ontario Lines: 13 Under 4.1bsd, one could say to the CSH shell: % (process &) Since sub-shells have no job control, you got no "[1] 12345" message. This almost works under 4.2bsd, unless the process produces output to the terminal and you have "stty tostop" set. The TOSTOP will cause a TTOU signal to be sent to the offending process, causing it to die silently and witout a trace. Try "stty tostop;(date &)" in the 4.2 /bin/csh. A fix for this, which allows processes in sub-shells to produce output, is to ignore the TTOU signal in processes spawned from sub-shells. -- -IAN! (Ian! D. Allen) University of Waterloo