There are also keywords: https://askubuntu.com/questions/445749/whats-the-difference-between-shell-builtin-and-shell-keyword https://askubuntu.com/questions/445

There are also keywords: https://askubuntu.com/questions/445749/whats-the-difference-between-shell-builtin-and-shell-keyword https://askubuntu.com/questions/445749/whats-the-difference-...