Jukka Salmi wrote:
[ ... ]
> 	[1] 6980
> 
> I guess it's the shell who prints these strings, isn't it? If yes, is
> there a way to suppress this output?

Yes, it is the shell that produces that output.

You can suppress the output by having the process disassociate itself from the
shell's process group and tty.  Most daemons will do so automaticly (see "man 3
daemon", "man 8 daemon"), and some shells have a "disown" primitive which will
disown a backgrounded task.

-- 
-Chuck