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Creating a Daemon

Posted on 1998-11-09
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Last Modified: 2010-04-20
I need to make a process into a daemon either through the command line or programmatically.  (command line, preferred)

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Question by:dpeng
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harrys earned 50 total points
ID: 1638458
from the comandline you could start it with
daemon&
which pushes it to the background.
in a program you would call fork() which starts a childprocess, then  inside the child  close the  stdin/stdout/stderr filehandles (see the manualpage of fork for details how
to detect who the child is..) and the child is you new daemon. inside the parent just
terminate the process.

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Expert Comment

by:overcode
ID: 1638459
Linux Journal ran an article on daemons a while back, complete with code samples. It might be available on their web site.

-Reeves
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by:benten
ID: 1638460
What do you mean by a daemon?  Most programs that are considered daemons first fork a new process, orphan the child (by having the parent exit), close all the file descriptors and reset the session ids.
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by:dpeng
ID: 1638461
Alright I'll try it out.
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