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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.mel.connect.com.au!news.syd.connect.com.au!phaedrus.kralizec.net.au!not-for-mail From: bde@zeta.org.au (Bruce Evans) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: What is a zombie? Date: 1 Oct 1996 19:42:28 +1000 Organization: Kralizec Dialup Unix Lines: 15 Message-ID: <52qp24$l88@godzilla.zeta.org.au> References: <52a5dt$qef@vixen.cso.uiuc.edu> <3249D8F7.2EA39DDA@lambert.org> <52jtk1$8s@uriah.heep.sax.de> <52ogk7$sg3@charm.il.ft.hse.nl> NNTP-Posting-Host: godzilla.zeta.org.au In article <52ogk7$sg3@charm.il.ft.hse.nl>, robert <robert@il.ft.hse.nl> wrote: > >On a POSIX machine, ignoring SIGCHLD will automatically reap >child-processes. Actually, on a POSIX.1-1990 machine, 1) SIGCHLD is not required to be supported unless job control is supported. (see section, 3.3.1.1, table 3.1 and table 3.2). FreeBSD supports job control. 2) If a process sets the action for the SIGCHLD signal to SIG_IGN, the behaviour is unspecified (see 3.3.1.3(2)(d)). In BSD4.4Lite and FreeBSD, it has no effect. -- Bruce Evans bde@zeta.org.au