1. create aliases for everything in ~/.bashrc to speed things up
2. window stacking / multi-tasking in iTerm with cmd + (shift) + d
3. turn on vi(m) syntax highlighting by adding :syntax on to ~/.vimrc
4. use jq to format and colorize json files / streams with the pipe | operator (so useful!)
5. Generate a custom command prompt at http://bashrcgenerator.com/ (just for fun)
I really like this topic, so made a video going into more detail on mine, if anyone's interested https://youtu.be/okGN2RXFw_U