zsh-syntax-highlighting / zsh-autosuggestions

Source these zsh plugins from ~/.zshrc for live highlighting / suggestions.

$ sudo apt install zsh-syntax-highlighting zsh-autosuggestions
$ echo 'source /usr/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh' >> ~/.zshrc
$ echo 'source /usr/share/zsh-autosuggestions/zsh-autosuggestions.zsh' >> ~/.zshrc