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From: anton@ucbvax.ARPA (Jeff Anton)
Newsgroups: net.unix-wizards
Subject: Re: killing zombies
Message-ID: <9883@ucbvax.ARPA>
Date: Tue, 13-Aug-85 21:02:08 EDT
Article-I.D.: ucbvax.9883
Posted: Tue Aug 13 21:02:08 1985
Date-Received: Sun, 18-Aug-85 21:49:31 EDT
References: <368@imsvax.UUCP>
Reply-To: anton@ucbvax.UUCP (Jeff Anton)
Organization: University of California at Berkeley
Lines: 22

In article <368@imsvax.UUCP> harris@imsvax.UUCP (Harris Reavin) writes:
>     Unfortunately no unix wizard on the net had a solution for zombie
>processes that disable ports and refuse to die from a "kill -9". I got
>mail from a number of other system administrators who had the same problem
>and asked for the solution if I found one short of rebooting. We discovered
>locally a way to drive a stake through a zombie's heart that I did not
>mention in the previous article. It is better than a reboot but is still a
>lot of trouble. We disconnect the cable from the controller of the affected
>port, change the ttys entry to turn off the port, reconnect the cable,
>and reedit the ttys file to turn the port on again. This usually works.
>I still hope that someone may come up with a better solution that does
>not involve crawling around the back of the computer in search of the
>proper cable.

Have you tried 'stty 0 > /dev/ttyhung'?  This usually does the trick with
hung tty lines.
-- 
C knows no bounds.
					Jeff Anton
					U.C.Berkeley
					ucbvax!anton
					anton@berkeley.ARPA