Restart, stop or start service while watching a log file (ie tail -f).
$ npm i xtail -g
When the service name is equal to its log file in /var/log/. For instance the service name is mongo and the log is on /var/log/mongo.log, use as follows:
xtail mongo
When the log file is different use:
xtail /var/log/my-mongo-log.log the-mongo-service
Then while watching the logs use one of these key shortcuts to start/stop/restart:
MIT - Jose Romaniello 2014