Bash script to check running process [duplicate]

Answer 1

Check if your scripts name doesn't contain $SERVICE. If it does, it will be shown in ps results, causing script to always think that service is running. You can grep it against current filename like this:

#!/bin/sh
SERVICE=$1
if ps ax | grep -v grep | grep -v $0 | grep $SERVICE > /dev/null
then
    echo "$SERVICE service running, everything is fine"
else
    echo "$SERVICE is not running"
fi

Answer 2

Working one.

!/bin/bash
CHECK=$0
SERVICE=$1
DATE=`date`
OUTPUT=$(ps aux | grep -v grep | grep -v $CHECK |grep $1)
echo $OUTPUT
if [ "${#OUTPUT}" -gt 0 ] ;
then echo "$DATE: $SERVICE service running, everything is fine"
else echo "$DATE: $SERVICE is not running"
fi

Answer 3

There are a few really simple methods:

pgrep procname && echo Running 
pgrep procname || echo Not running 
killall -q -0 procname && echo Running 
pidof procname && echo Running

Answer 4

The most simple check by process name :

 bash -c 'checkproc ssh.exe ; while  [ $? -eq 0  ] ; do  echo "proc running";sleep 10; checkproc ssh.exe; done'

Answer 5

I tried your version on BASH version 3.2.29, worked fine. However, you could do something like the above suggested, an example here:

#!/bin/sh

SERVICE="$1"
RESULT=`ps -ef | grep $1 | grep -v 'grep' | grep -v $0`
result=$(echo $ps_out | grep "$1")

if [[ "$result" != "" ]];then
    echo "Running"
else
    echo "Not Running"
fi

Answer 6

Despite some success with the /dev/null approach in bash. When I pushed the solution to cron it failed. Checking the size of a returned command worked perfectly though. The ampersrand allows bash to exit.

#!/bin/bash
SERVICE=/path/to/my/service
result=$(ps ax|grep -v grep|grep $SERVICE)
echo ${#result}
if  ${#result}> 0 
then
        echo " Working!"
else
        echo "Not Working.....Restarting"
        /usr/bin/xvfb-run -a /opt/python27/bin/python2.7 SERVICE &
fi