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From: roy at popmail.med.nyu.edu (Roy Smith)
Date: Wed, 14 Apr 1999 11:28:18 -0400
Subject: forking + stdout = confusion
References: <RUgQ2.31$Oq4.32657@newsfeed.avtel.net> <87n20caldg.fsf@spock.localnet.de> <roy-1304991155360001@qwerky.med.nyu.edu> <ne2R2.33$xa5.26667@newsfeed.avtel.net>
Message-ID: <roy-1404991128180001@qwerky.med.nyu.edu>
X-UID: 314
clarence at silcom.com (Clarence Gardner) wrote:
> That does indeed do the trick, but you probably had to os.close(2) also.
> (Both stdout and stderr normally are piped into Apache.)
I don't know how all Apaches work, but at least on our machine, cgis get
pipes for stdin and stdout, but stderr is connected directly to the error
log file. I wrote a little test cgi which is just:
> #!/bin/sh
> sleep 300
opened http://my.host.name/cgi-bin/roy/sleeper.cgi and ran lsof, which is
a neat utility which mucks about in the kernel's file tables and shows you
what files a process has open. I got:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
sleep 25247 nobody 0r FIFO 0x04a6ff00 0 22787
sleep 25247 nobody 1w FIFO 0x04096e00 0 22788
sleep 25247 nobody 2w VREG 3049,395040 4420204 90
/www/logs/error_log
--
Roy Smith <roy at popmail.med.nyu.edu>
New York University School of Medicine