Date: Thu, 31 May 2012 23:53:49 -0400 From: Jason Hellenthal <jhellenthal@dataix.net> To: Alexander Pronin <scher@freebsd.org> Cc: Marcus von Appen <mva@freebsd.org>, freebsd-stable@freebsd.org, freebsd-ports@freebsd.org Subject: Re: [ GSOC ] Differences in shell behaviour Message-ID: <20120601035349.GA97671@DataIX.net> In-Reply-To: <4E946838-4F3B-421A-839E-05E1A01464AB@FreeBSD.org> References: <4E946838-4F3B-421A-839E-05E1A01464AB@FreeBSD.org>
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On Thu, May 31, 2012 at 11:21:10PM +0400, Alexander Pronin wrote: > Hello everyone! > I am GSOC student at FreeBSD Project. > So my GSOC Project is "Parallelization in the ports collection". > You may checkout wiki page of this project: http://wiki.freebsd.org/SummerOfCode2012/Parallelization_in_the_ports_collection > > Is it suitable to write sh script for 9.0, that does not work in 8.3? > > To sum up, the scenario is as following: > I need to spawn some processes in background to build port's dependencies. > Store their pids. > Wait for a while or do some stuff. > explore exit codes of spawned processes by their pids. > > The problem is: > ### sh in 8.3 > $ false & pid=$! > $ > [1] Done (1) false > $ wait ${pid} > wait: No such job: 4852 I don't see this behavior on 8.3-STABLE @r236350 i386 --- Console> false & pid=$! Console> wait ${pid} [1] Done (1) false Console> echo $? 1 Console> Using (builtin false) or (/usr/bin/false) I get the same results. Is this a GENERIC system your working on ? And is this a blank user account with no login.conf or profile modifications ? --- ident /bin/sh ... for reference. /bin/sh: $FreeBSD: stable/8/lib/csu/i386-elf/crti.S 146369 2005-05-19 07:31:06Z dfr $ $FreeBSD: stable/8/lib/csu/i386-elf/crtn.S 146369 2005-05-19 07:31:06Z dfr $ $FreeBSD: stable/8/lib/csu/i386-elf/crt1_s.S 217470 2011-01-16 10:41:47Z kib $ $FreeBSD: stable/8/lib/csu/common/crtbrand.c 174251 2007-12-04 12:18:43Z kib $ $FreeBSD: stable/8/bin/sh/alias.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/arith.y 213390 2010-10-03 21:56:20Z jilles $ $FreeBSD: stable/8/bin/sh/arith_lex.l 234001 2012-04-07 20:52:21Z jilles $ $FreeBSD: stable/8/bin/sh/cd.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/bltin/echo.c 127958 2004-04-06 20:06:54Z markm $ $FreeBSD: stable/8/bin/sh/error.c 214123 2010-10-21 01:13:41Z obrien $ $FreeBSD: stable/8/bin/sh/eval.c 231086 2012-02-06 13:36:49Z dumbbell $ $FreeBSD: stable/8/bin/sh/exec.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/expand.c 218992 2011-02-24 10:23:22Z brucec $ $FreeBSD: stable/8/bin/sh/histedit.c 217485 2011-01-16 22:10:18Z jilles $ $FreeBSD: stable/8/bin/sh/input.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/jobs.c 222208 2011-05-22 22:28:07Z jilles $ $FreeBSD: stable/8/bin/sh/mail.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/main.c 222452 2011-05-29 15:07:53Z jilles $ $FreeBSD: stable/8/bin/sh/memalloc.c 214190 2010-10-21 23:45:57Z obrien $ $FreeBSD: stable/8/bin/sh/miscbltin.c 213390 2010-10-03 21:56:20Z jilles $ $FreeBSD: stable/8/bin/sh/mystring.c 213390 2010-10-03 21:56:20Z jilles $ $FreeBSD: stable/8/bin/sh/options.c 221515 2011-05-05 22:07:02Z jilles $ $FreeBSD: stable/8/bin/sh/output.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/parser.c 221522 2011-05-06 12:49:32Z jilles $ $FreeBSD: stable/8/bin/sh/redir.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/sh/show.c 214113 2010-10-20 18:25:00Z obrien $ $FreeBSD: stable/8/bin/test/test.c 220250 2011-04-01 18:23:44Z delphij $ $FreeBSD: stable/8/bin/sh/trap.c 231086 2012-02-06 13:36:49Z dumbbell $ $FreeBSD: stable/8/bin/sh/var.c 231531 2012-02-11 20:37:08Z jilles $ /usr/bin/false: $FreeBSD: stable/8/lib/csu/i386-elf/crti.S 146369 2005-05-19 07:31:06Z dfr $ $FreeBSD: stable/8/lib/csu/i386-elf/crtn.S 146369 2005-05-19 07:31:06Z dfr $ $FreeBSD: stable/8/lib/csu/i386-elf/crt1_s.S 217470 2011-01-16 10:41:47Z kib $ $FreeBSD: stable/8/lib/csu/common/crtbrand.c 174251 2007-12-04 12:18:43Z kib $ $FreeBSD: stable/8/usr.bin/false/false.c 111107 2003-02-19 00:10:28Z peter $ > > ----------------------- > ### sh in releng9 > $ false & pid=$! > $ > [1] Done(1) false > $ wait ${pid} > $ echo $? > 1 > $ > > I am currently working in releng9 environment, so the result suits my needs. > > But, is it suitable to write sh script for 9.0, that does not work in 8.3? > > _______________________________________________ > freebsd-ports@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-ports > To unsubscribe, send any mail to "freebsd-ports-unsubscribe@freebsd.org" -- - (2^(N-1))
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