Dear Joshua,
I would like to know if there is a reference of the "exit codes" of the httpd binary (apache2 in the Debian distribution I'm using). After browsing at http://httpd.apache.org/docs/2.2/ (and specially http://httpd.apache.org/docs/2.2/programs/httpd.html), I haven't found any document that describe the topic, so I come to the list in the hope of someone could help me, please :) Maybe it sound a estrange question, but I'm trying to debug a complex utilization of the apache2ctl script. The httpd binary is failing to start (returning 141 instead of the usual 0) and I'm wondering why... Thank you very much in advance!The server itself just issues 0 for success and 1 for failure as far as I know. apachectl has some other codes documented in comments at the top of the script.
I referred to the error code returned by the apache binary, not by apache2ctl (I've hacked the apache2ctl script to include a simple 'echo $ERROR' after the apache2/httpd invocation attempt).
I don't know where 141 would be coming from. Do you get any interesting error messages at the prompt or in the error log? If not, try running httpd under strace or the equivalent.
I've finally solved the problem explicitly stating the input, output and error descriptor when invoking the apache2ctl as follows:
# apache2ctl start </dev/null >/dev/null 2>/dev/nullUsually, you never need to use that because apache2ctl will inherit such descriptors from the parent process (i.e., the shell from where you are invoking the command). However, I'm using a "special" shell that doesn't run in any terminal (too complex and boring to explain :) and, therefore, maybe doesn't has any descriptor to be inherit, thus causing the problem.
Although this is a good solution for me, I'm still wondering about if that the apache2/httpd binary returns 141 when it detects a missing standard input/output/error descriptor makes sense...
Thank you for your answer! Best regards, -------------------- Fermín Galán Márquez CTTC - Centre Tecnològic de Telecomunicacions de Catalunya Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860 Castelldefels, Spain Room 1.02 Tel : +34 93 645 29 12 Fax : +34 93 645 29 01 Email address: fermin dot galan at cttc dot esPD. I've seen some "naming offset" between the official documentation and my installed apache version. For example, I have 'apache2ctl' instead of 'apachectl' and my binary is named 'apache2' instead of 'httpd'. However, I guess that this is a consequence of my distro (Debian) and that only affect names (I mean, the behavior of the scripts and binary should be the same).
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