Restarting a Shiny App

I have to post this for my own sanity. I tend to create shiny apps in a specific folder and link to them using symbolic links from the ShinyApp folder. This allows multiple versions (prod and dev) and keeps code clean. I don't know how many times I've wrestled with an app pointing to an earlier version when updates have been made and it's always driven me crazy. I also don't know how many times I've read through the shiny-server documentation but never discovered section 3.1.1 - Restarting an Application. Now I'm happy I've discovered touch restart.txt as a way to force an app to restart. All my versioning issues have gone away.