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Unix / Linux Discussion / Shell Script for Start/Stop Process
« on: August 23, 2005, 08:00:41 pm »
For a long time i used to start a process and then to kill the damn thing, id have to ps aux | grep process_name, then kill -9 PID. It started to get pretty old after a while.. so... I wrote this little bit of shell script to start/stop services on my server(s). I use it all over the place.
Usage:
1. create startstop.sh
2. chmod u+x startstop.sh
3. Change the "/usr/local/bin/blah -FLAGS" to whatever process you want to start.
4. Change the "PROCESS_NAME" to whatever the process name is. Also, you want to make sure that your process does not spawn child processes. If it does, add another line "ps wuax | grep PROCESS_NAME | awk '{system("kill -9 " $2)}'" for those child processes as well.
5. now you can ./startstop.sh start or ./startstop.sh stop
Fairly simple script, but it saves a lot of headache.
Also, I forgot to mention, this is a FORCED shutdown, NOT a friendly one. So, be careful what you use it for. It should not be used for large-scale processes like MySQL/Apache etc..
And as iago pointed out, sometimes instead of using the ps wuax method, killall -9 is better to use. This is intended to kill generic processes, like, counterstrike servers and things of that nature. Make certain that your PROCESS_NAME is not TOO! generic.
Also, if you want to restart a service, you can use
Code: [Select]
#!/bin/sh
# start
if [ "x$1" = "x" -o "x$1" = "xstart" ]; then
/usr/local/bin/blah -FLAGS
# stop
elif [ "x$1" = "xstop" ]; then
ps wuax | grep PROCESS_NAME | awk '{system("kill -9 " $2)}'
fi
Usage:
1. create startstop.sh
2. chmod u+x startstop.sh
3. Change the "/usr/local/bin/blah -FLAGS" to whatever process you want to start.
4. Change the "PROCESS_NAME" to whatever the process name is. Also, you want to make sure that your process does not spawn child processes. If it does, add another line "ps wuax | grep PROCESS_NAME | awk '{system("kill -9 " $2)}'" for those child processes as well.
5. now you can ./startstop.sh start or ./startstop.sh stop
Fairly simple script, but it saves a lot of headache.
Also, I forgot to mention, this is a FORCED shutdown, NOT a friendly one. So, be careful what you use it for. It should not be used for large-scale processes like MySQL/Apache etc..
And as iago pointed out, sometimes instead of using the ps wuax method, killall -9 is better to use. This is intended to kill generic processes, like, counterstrike servers and things of that nature. Make certain that your PROCESS_NAME is not TOO! generic.
Also, if you want to restart a service, you can use
Code: [Select]
elif [ "x$1" = "xrestart" ]; then
kill -HUP PROCESS_NAME