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How to start a Play Framework application running as a service on Ubuntu 16.04

As a relatively brief note, this seems to be the correct way to start a Play Framework application as a service on an Ubuntu 16.04 system.

A shell script to start your Play application

First, you need to create a little Unix shell script that runs the startup command for your Play Framework application. I created a Play application for a website named kbhr.co, so I cd into the directory for that website:

How to start a Scala/Akka Actor

This is an excerpt from the Scala Cookbook (partially modified for the internet). This is a short recipe, Recipe 13.5, “How to start a Scala/Akka Actor.”

Problem

You want to start an Akka actor, or attempt to control the start of an actor.

How to restart Mac OS X networking from the command line

I've been having a problem with my MacBook Air (running Mac OS X Lion) and my wireless router, so today I decided to write a script to restart the OS X wireless networking service from the command line. In short, I use this OS X command to turn off the Mac networking service:

sudo ifconfig en0 down

and I use this command to turn the Mac wireless network service back on:

sudo ifconfig en0 up

(I found these commands on the website I linked to.)

Android emulator not loading my app

I haven't used Android in a little while now, in particular with my new laptop, and the first time I tried running an Android app from inside Eclipse, the Android emulator wouldn't finish starting properly and run my app.

I remember I used to look under the "all apps" icon, and could sometimes find my app was actually loaded, but in this case, it wasn't loaded at all.

How to gracefully restart Nginx

Nginx FAQ: How do I gracefully restart Nginx?

This used to be harder, but these days all you have to do is run this command:

$ sudo service nginx restart

Note that you will probably want to make sure your configuration is correct with this command before running that command:

$ nginx -t