problem running script in background

[George_Dodds]

Hi all

I'm running the following commands

nohup ./runimpdb pcs > /dev/null 2>&1 &

this should run the script in the background so it doesnt matter when my remote connection times out.

But if i press any key the process terminates and the same when my connection times out.

What am i missing here?

Cheers

George

[Richard Hepworth]

George,

Are you sure there are no errors in the script? does it run fine in the foreground?

[George_Dodds]

The script is fine it's to refresh an informix db.

It runs fine in the foreground.

[Richard Hepworth]

have you tried redirecting stdout and stderr to a file instead of /dev/null and see if that gives any clues as to why the script is exiting? The command you are using should work providing the script is good

[V. Nyga]

Hi,

the command will always have the father process id (PPID) of the session where you start the command. So if this session is quited, then all children processes also will quit.
You have to start the process with father process id '1' (if possible).

For your other problem - how do you connect to the ws? Which term setting?

HTH
Volkmar

[Laurent Menase]

Hi George,
are you sure that your process doesn't make a "read"?

else you should redirect input too.

[Patrick Wallek]

I would take a slightly different approach to this.

Step 1) Create a small script file with your command line and make sure it is executable by you. I would probably do something like:

# cat runimp
/path/to/runimpdb pcs > /path/to/logfile 2>&1

Step 2) Use 'at' to run it.
# at -f /path/to/runimp now

I find 'at' much easier to deal with and I don't have to worry if my session dies. The script will keep running. By redirecting to a logfile you can monitor progress as well by doing a 'tail -f /path/to/logfile' (assuming the process sends useful output to the logfile).

[Dennis Handly]

As Laurent suggests, it is probably trying to read from your terminal. You need to also use:
< /dev/null

(This seems similar to the remsh -n issue.)

And as Richard said, you might want to look at the output, there may be a message.

[Procnus]

Is it possible that it is a do loop and a sleep nn line is missing?