How to Automatically Restart Postgres in Linux

If you have a Postgres database and want to ensure that it automatically restarts, this shell script is very helpful, especially for online environments such as C9.

# Startup Postgres server automatically
function checkstart {
    service=$1
    if [[ ! $(ps -ef | grep -v grep | grep "$service" | wc -l) > 0 ]]
    then
        sudo service $service start &
    fi
}
checkstart postgresql