On Dec 26, 2007 5:13 PM, linux. il <[EMAIL PROTECTED]> wrote: > > > > > > > Hi List. > > > > > > I'm writing a script to automate some system maintenance tasks, and I > > > want to connect over SSH to several remote computers and do stuff on > > > them. I'm using ssh -f to background ssh so I can run the same operation > > > on multiple machines in parallel, otherwise it will be too slow - the > > > maintenance job may take up to a few minutes to run and the script is > > > not supposed to be fully automatic: a human is to monitor the process. > > > > > > But I don't want just to fire and forget the SSH processes - I want to > > > exit from the script only when all the SSH processes have completed. I > > > can do that by monitoring the process ids of the background SSH > > > processes, if I could know them - which I'm having a difficult time > > > detecting. > > > > > > I'm writing in bash, and optimally it would be something like this: > > > > > > for server in 1 2 ...; do > > > ssh -f [EMAIL PROTECTED] 'run maintenance task' > > > pids="$pids $(getSSHpid)" > > > done > > > > > > while kill -0 $pids 2>/dev/null; do echo "Waiting.."; sleep 1; done > > > > > > but I didn't manage to find a way to get the process id of the ssh > > > process after it goes to background, other the 'ps'ing for it. > > > > > > How can I go about doing this? > > > > > > -- > > > > > > Oded > > > > > Sorry for OT, but some kind of distributed shell seems me more > suitable for this task - > http://www.linux-mag.com/microsites.php?site=business-class-hpc&sid=build&p=4658 > >
You might as well check http://www.csm.ornl.gov/torc/C3/ -- Cheers, Maxim Veksler "Free as in Freedom" - Do u GNU ? ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
