I remember on some systems that a "background" job would continue to run after logout, but only if it didn't try to output anything to stdin or stderr anymore (I believe that was true on AIX).

The trick to get around that was to say

command >&/dev/null&

Walter

Matt Graham wrote:

After a long battle with technology, Joshua Zeidner wrote:

On Wed, Mar 26, 2008 at 2:01 PM, Nathan <nathan@paysonlinux.org> wrote:

On Wednesday 26 March 2008 13:59:59 Joshua Zeidner wrote:

Is there an easy way to create a daemon without creating an init.d
script, etc.?

what I do is ssh into whichever box it is, even the local machine, and
run the command with an & at the end, then exit. From there I can do
whatever I want, except reboot and it will continue running.

well the system I'm using appears to terminate a background (&)
process when the user is logged out.


The shell sends HUP to all its children when the shell exits.  Hence nohup.

I always thought that background processes are still children of the shell
process, and thus terminating the shell will kill the &'d process, but I
could be wrong on that one.  I'm not sure if this is the default, or just
how this Debian system was set up.


Debian?  Look into the start-stop-daemon program.  That's a fairly simple way 
to make something that wasn't originally intended to be a daemon act somewhat 
like a daemon.  I used this to run a couple of useful persistent scripts at 
boot time on a Debian box.

Everything else on this server is super bolted down- so I would be surprised
if [it's] not default.


HUPping all children of the shell is standard behavior, not anything "super 
bolted down".