site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com (There seems to be a lot of mis-information about launchd files.) Thank you for the suggestion, pedz On Dec 28, 2007, at 5:25 PM, Dave Zarzycki wrote: I haven't tested this, but I suspect it should work... Setup: mkfifo /var/postgres_pipe Job 1: Job 2: davez On Dec 28, 2007, at 8:44 AM, Perry Smith wrote: postgres <args> | rotatelogs <args> Anyone have any suggestions of how to do this? Thank you, pedz _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... I've been dinking with Unix since '82 but I've never played with named pipes. I wrote a couple test scripts today and I think I can get that to work. Another related question: I saw one example launchd.plist file that had two stanzas in it. Would that work? Have postgres write to /var/postgres_pipe via the launchd plist StandardOutPath and StandardErrorPath keys. #!/bin/sh exec rotatelogs < /var/postgres_pipe # Note to self: It would have been nice if launchd supported a StandardInputPath configuration option I may be making too big a deal of all this but I can't figure out how to do something like: from launchd. If I put that command in a simple bash shell script, I *believe* it will not work. The signal will go to bash and bash will not pass it along to the children. I could trap the signal and pass it along myself... but, $! gives the pid for the last process in the pipe (rotatelogs). That is not what I need to signal. I need the signal passed to postgres. And, in fact, it would be nice if the signal did NOT pass to rotatelogs. I'd like for it to stop when its input closes and not before then. I'm going to look in to using ksh and maybe using co-processes with ksh. bash does not seem to have that concept. But, it just seems like it should not be this hard to do. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/zarzycki %40apple.com This email sent to zarzycki@apple.com This email sent to site_archiver@lists.apple.com