From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7955 invoked by alias); 7 Mar 2012 13:51:30 -0000 Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm Precedence: bulk X-No-Archive: yes List-Id: Zsh Users List List-Post: List-Help: X-Seq: 16862 Received: (qmail 23636 invoked from network); 7 Mar 2012 13:51:28 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on f.primenet.com.au X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, SPF_HELO_PASS autolearn=ham version=3.3.2 Received-SPF: pass (ns1.primenet.com.au: SPF record at case.edu designates 129.22.105.36 as permitted sender) Message-ID: <4F57666B.70704@case.edu> Date: Wed, 07 Mar 2012 08:45:15 -0500 From: Chet Ramey Reply-To: chet.ramey@case.edu User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: Bart Schaefer CC: zsh-users@zsh.org, chet.ramey@case.edu Subject: Re: job control problem References: <2c45df49.32a93.135e774fca6.Coremail.hanpingtian@163.com> <120306214608.ZM11429@torch.brasslantern.com> In-Reply-To: <120306214608.ZM11429@torch.brasslantern.com> X-Enigmail-Version: 1.3.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Junkmail-Whitelist: YES (by domain whitelist at mpv1.tis.cwru.edu) On 3/7/12 12:46 AM, Bart Schaefer wrote: > schaefer[501] bash --version > GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11) > Copyright (C) 2007 Free Software Foundation, Inc. > schaefer[502] bash /tmp/t.sh > 1 > ... > 67 > /tmp/t.sh: fork: Resource temporarily unavailable > schaefer[503] echo $? > 128 > > No "retry" mentioned. What am I missing? Bash-4.2 will sleep for 1, 2, 4, then 8 seconds if a fork fails, trying after each sleep to reap dead children. It will give up after that and report the fork failure. You'll see messages like this: $ ls bash: fork: retry: No child processes bash: fork: retry: No child processes bash: fork: retry: No child processes bash: fork: retry: No child processes bash: fork: Resource temporarily unavailable Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/