test_data.sh

#! /bin/bash

SCRIPT=("mongod")

PID=$(ps aux | grep -v grep | grep $SCRIPT | awk '{print $2}')

if [[ -z "$PID" ]]
then
        nohup /opt/mongo30/mongodb/bin/mongod --dbpath /var/lib/mongodb/ --storageEngine wiredTiger --port 27017 &
else
#kill -9 $PID
#sleep 17
#sleep 40
echo "Successfully killed '$PID' no process. " 
PID=$(ps aux | grep -v grep | grep $SCRIPT | awk '{print $2}')

if [[ -z "$PID" ]]
then
        nohup /opt/mongo30/mongodb/bin/mongod --dbpath /var/lib/mongodb/ --storageEngine wiredTiger --port 27017 &
fi

PID=$(ps aux | grep -v grep | grep $SCRIPT | awk '{print $2}')
echo "Successfully started '$SCRIPT' with process no '$PID'."

fi
exit

####RUN IT in crontab entry using
###*/2 *    * * *   root    /bin/bash /home/mohua/mongo30restarter.sh >> /home/mohua/mongo_out.txt