Setting up Tmux environment
Tmux is a fast and easy to use terminal multiplexer. It lets you switch easily between several programs in one terminal, detach them (they keep running in the background) and reattach them to a different terminal. And do a lot more.
It's an extremely useful piece of software, especially when working with remote server through SSH or just during some development work where you need to have a quick access to code, database, debugger and more in the same terminal window.