Re: a 'wrapper'

[Jan-Benedict Glaw <jbglaw@lug-owl.de>]

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On Sat, 2002-06-29 05:25:02 -0500, xlp <xlp@emtel.net.co>
wrote in message <20020629052348.A50622@nietzsche>:
> hi, i have been trying to let certain process working on a remote machine in this way:
> nohup ./a.out >> /dev/null &
> but when i log off, the process dies.
> Can i code a certain process that fork itself, call setsid() and run a.out with system() or exec() ?
> How can i deal with this situation? I want that the executable object a.out forget about terminal control and do its work without care about sdtin/stdout/stderr.

You should never ever use system(), is's insecure. Use exec*(). However,
you won't need that - try this:

	nohup ./a.out > /dev/null 2>&1 < /dev/null &

It probably dies because of a SIGPIPE if it attempts to read something
from stdin or if it tries to write to stdout. You break this file
descriptors in the moment you log off...

MfG, JBG

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Jan-Benedict Glaw   .   jbglaw@lug-owl.de   .   +49-172-7608481
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