07-22-2005
Checking before start and stop processes
Hi,
I have 2 start and stop sh.
Start sh
--------
This will start few processes.
Example code:
echo "start process : lgz200 /pipe=test_jobs"
nohup lgz200 /db=test/test1@test1 /pipe=test_jobs > ../log/lgz200_j.log &
echo "echo \"stop process (pid=$!): lgz200 /pipe=test_jobs\"" >> test_stop
echo "kill -9 $!" >> test_stop
echo "start process : lgz210 /pipe=test_jobs"
nohup lgz210 /db=test/test1@test1 > ../log/lgz210.log &
echo "echo \"stop process (pid=$!): lgz210 /pipe=test_jobs\"" >> test_stop
echo "kill -9 $!" >> test_stop
chmod 744 test_stop
exit 0
test_stop script (auto generated from start script)
--------------
echo "stop process (pid=155164): lgz200 /pipe=test_jobs"
kill -9 155164
echo "stop process (pid=128078): lgz210 /pipe=test_jobs"
kill -9 128078
Problem
-------
I wish to include checking in start and stop script like:
start - check if the process name is exist, if exist no action. else start a new process.
stop - a loop to check if the process still exists, if exist, kill it.
this 2 checking is to make sure there are no duplicate process that will be run concurently from start script and to make sure we will completely kill the process in stop script.
I am still beginner in unix, can anyone help me to show me some sample code to do the 2 checkings? Any other suggestion will be most welcomed.
Thank you very much for your help.
Regards,
weihann.
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