background job

[moon_5]

Hi all~

I tried to run background job on 11.11

but when I close terminal session,

# nohup sar -d 180 400 > sar.log &

background job also stopped.

what's the problem ??

regards
moon

[lawrenzo_1]

Not sure what you are trying to do with sar -d 180 400.

When I run nohup sar -d 180 400 > sar.log & nothing happens and when I run

# sar -d 180 400

I only get the headings from the output.

you can also do

#at now
sar -d 180 400 > sar.log


this will then give you a PID witht he process running

[Steven E. Protter]

launch background job:

nohup jobname &

or

jobname &

exit twice in seqeuence to release the terminal session.

ps -ef | grep jobname

to see the process list.

SEP

[moon_5]

Thank you for reply~

now I using #at now command but is it wrong?

#nohup sar -d 180 400 > sar.log &

then I tried to exit terminal session.

you know this message showed.

#there is running jobs

after that I exit session.

#ps -ef|grep sar -> no process

do I have to set something ??

[Stuart Browne]

Try this..

nohup sar -d 180 400 > sar.log &

then close your emulation session, don't 'exit'.

When you 'exit', the shell makes a reasonable attempt to kill all child processes.

What 'nohup' does, is stops a 'HUP' signal getting to your child process, not a reasonable 'TERM' or 'QUIT'. If you kill (not exit) the shell session, it isn't quite so friendly.

You can try setting 'stty -hupcl', but that probably won't help either.

[lawrenzo_1]

the at now command is another way to run the job but this is by using the cron daemon.

it is find and you do not need the nohup or & as I previously stated:

# at now
sar -d 180 400 > sar.log


you can also schedule a job using at eg

at

as mentioned will run using the cron daemon.

HTH

[moon_5]

thank you ~