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From: karsh@geowhiz.UUCP (Bruce Karsh)
Newsgroups: net.unix
Subject: Re: Q's on: System V /etc/init....
Message-ID: <293@geowhiz.UUCP>
Date: Tue, 19-Nov-85 23:21:28 EST
Article-I.D.: geowhiz.293
Posted: Tue Nov 19 23:21:28 1985
Date-Received: Sat, 23-Nov-85 00:11:53 EST
References: <5749@fortune.UUCP> <2968@sun.uucp> <331@ncr-sd.UUCP>
Reply-To: karsh@geowhiz.UUCP (Bruce Karsh)
Organization: UW Madison, Geology Dept.
Lines: 34

In article <331@ncr-sd.UUCP> greg@ncr-sd.UUCP (Greg Noel) writes:
>
>What has happened is that /etc/init has become a superdaemon, capable
>of keeping track of other processes (not just login processes), starting
>and stopping them based upon a control file and a settable run level.
>Mats Wichmann (below) identifies some flaws and Guy Harris tries to
>offer some help (but may have missed the point), but I think the real
>flaw was that the \only/ product in System V that can be run under
>/etc/init is getty.  There are at least three other standard products
>that could have been trivially modified to run under the superdaemon
>(cron, lpsched, and errdemon); this would have made them more visible,
>more controllable, and more useful, and it would have provided a model
>for other daemons to follow.  And it would have made the system easier
>to control and manage.
>
  This has been done on Masscomp systems.  Here are some lines from
our /etc/inittab file:


1:xx::/etc/getty console ! 0 
1:up:c:/etc/update
2:cr:c:/etc/cron
2:up:c:/etc/update
2:nd::/etc/net/netd 2>/usr/adm/netd.log
2:wd::/etc/net/rwhod 2>/usr/adm/rwhod.log
2:00:c:/usr/local/holdline /dev/tty0
2:18:c:/usr1/karsh/D/LOCAL/getty-b tty18 Y
-- 

Bruce Karsh
U. Wisc. Dept. Geology and Geophysics
1215 W Dayton, Madison, WI 53706
(608) 262-1697
{ihnp4,seismo}!uwvax!geowhiz!karsh