linux script to check if a service is running and start it, if it’s stopped

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Here is a simple script that will check if your specified service is running and will start it if it’s stopped.

You will have to replace “replace_me_with_a_valid_service” with the name of the service you want to check

#!/bin/bash
service=replace_me_with_a_valid_service

if (( $(ps -ef | grep -v grep | grep $service | wc -l) &gt; 0 ))
then
echo "$service is running!!!"
else
/etc/init.d/$service start
fi

#!/bin/bash

service=replace_me_with_a_valid_service

if (( $(ps -ef | grep -v grep | grep $service | wc -l) > 0 ))

then

echo "$service is running!!!"

else

/etc/init.d/$service start

You can place it in crontab and have it executed automatically
eg. to check every minute, insert into cron

* * * * * /path/to/script

1	* * * * * /path/to/script

Fonte: http://www.akamaras.com/linux/linux-script-to-check-if-a-service-is-running-and-start-it-if-its-stopped/

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