UNIX for Dummies Questions & Answers

I entered a command at the prompt and it's interactive (not background). It gathers some stats and writes them to a file. I want to see this job running and what it's doing - I/O especially and maybe CPU and stuff. What can do to see this (say using a second session?)
I know it's a long job but I'm not getting a prompt back and I'm not sure if it's running.

Jobs command does nothing when I run it.

This same command is in a script that is run after a job completes. When I run the sript interactively it loads the log file with data. But when I run it nohup <> & it doesn't produce any output - I'm told it's Oracle data. There's another program in the script that creates a file and puts some initial data in it but not as muh data as when I run it interactively.

So interactive works good but 'nohup script &' seems to skip log files or lacks data within the log file.

Hi, when using nohupm output is written to nohup.out in the directory where the script was called if the user under which the script runs has write permissions there, to $HOME/nohup.out otherwise. You can direct the output to file by using:

Code:

nohup /path/to/script > /path/to/outputfile &

NOHUP - Yes I get a file called nohup.out and it shows the commands being run/messages which normally appear on the screen while the script is running. But the output from the various programs within the script got to separate directory/files. One of the files doesn't get as much data as when I run it interactively.

Also got this error in the log file after logging off - since I ran it in the background I would have though it would keep going:

Called from GetStats.zPrAll.zPrServer.ServerDiff.DeltaKey.zHash.DeltaKey.Delta::zArray:552
FATAL ERROR: Received signal HUP;
Called from GetStats.zPrAll.zPrServer.ServerDiff.DeltaKey.zHash.DeltaKey.zArray.zFindTotal.(eval).main::zSigHand ler:3027
System call (open) failed; reason=No child processes
System call failed; reason=-1
~

---------- Post updated at 08:46 AM ---------- Previous update was at 06:21 AM ----------

Here's my steps....
1) Log into UNIX
2) Sudo into my environment
3) Run nohup perf_mon -c revoke.cfg &

If I log out (exit) and close my unix session and shut off my computer will the command still run? If not why not?

Also what does this command do?
nohup perf_mon -c revoke.cfg | tee revoke.out &

Also I'm logged in to work via the internet using VPN. When I lose my connection the session stops. This happens at least once a session (lousy connection). That's why I want to run the script in the background and make sure that the child scripts keep running when I lose my VPN connection.

You shouldn't be piping anything out of a command run with nohup. I think it's the tee that's dying, not perf_mon, but that causes its pipe to break... Redirect output to revoke.out instead, then watch the file with 'tail -f revoke.out'.