nohup doesnt work

[Sachin_29]

Nohup doesnt work for me ..Tried on Aix and Sunos. Is there any settings that needs to be checked?

[Michael Schulte zur Sur]

Hi,

set -v. Please be verbose. We need more details.

thanks,

Michael

[Geoff Wild]

How are you running it?

Should be like:

nohup yourscript &


Rgds...Geoff

[A. Clay Stephenson]

All nohup does is exec a command that is set to ignore SIGHUP's and SIGQUIT's and to redirect stdout and stderr. It certainly works as advertised. Typically, problems arise because a given process is expecting to be connected to a terminal or because nohup.out cannot be created --- possibly permisssions or filesystem space.

It would help to know what you are trying to do.

[Sachin_29]

yeah geoff
Mike didnnt get any verbose nohup test.sh -v ?

[Michael Denney]

As Clay mentions, some processes expect to be attached to a terminal and will there for quit when you exit, even if you ran the process as "nohup". The only work around I have seen on hpux to this issue is to run the process with "at" instead.

at -f "script name" now

[Sachin_29]

It executes the script but it cancels it once i log out!!!

[A. Clay Stephenson]

I assume that you are starting the command in the background via '&'. One thing that can cause this is a signal handler for SIGHUP could be installed in the process so that the nohup has no effect. This is unlikely if this is a shell script because traps cannot be set to respond to a signal that was set to be ignored upon entry into the current shell. I suspect what is really happening is that your process is looking for input on stdin and it is seeing EOF and terminates.