ksh93 is my preferred shell. Outside of being available for every UNIX/Unix-like system I have used, it has some fantastic features. This is just a short notation of some of my favourites.

• set -o viraw
• 1. Type a command in vi/viraw mode and then press esc to enter command-mode. Typing "v" will open the full vi editor. This way you can work in vi to write your command, and when you esc/:wq to exit, it will execute your commands.