How to start mongo with Grunt

Gruntfile.js

    shell: {
      mongo: {
          command: "sh startMongoIfNotRunning.sh",
          options: {
              async: true
            }
        },
    }

startMongoIfNotRunning.sh

# this script checks if the mongod is running, starts it if not

if pgrep -q mongod; then
    echo running;
else
    mongod;
fi

exit 0;