Here’s a short post with a tip that I find very useful.
In many scenarios you have several SharePoint 2013 installations to handle – it might be different farms, production environments, testing, staging, development etc. Do you know which Central Administration you’re working in at the moment? They all look the same, SharePoint Blue, the regular Status Bar warning that you’re running out of disk space etc. Unless countermeasures are taken you don’t know what environment you’re in unless you take a look at the URL – which in many cases is just another server name and port. It’s very easy to make a mistake and make a change in the production environment instead of in the test or dev environments.