How to check if docker daemon is running?

Question

I am trying to create a bash utility script to check if a docker daemon is running in my server. Is there a better way of checking if the docker daemon is running in my serv

Answer 1

A function could looks so:

isRunning {
    `ps -ef | grep "[d]ocker" | awk {'print $2'}`
}

I created a script to start, stop, restart a mongodb-server. You only need to change some path inside the scripts, and i also works for you: Script