Setting up Numpad keys on Zsh

Sourced from: http://superuser.com/questions/742171/zsh-z-shell-numpad-numlock-doesnt-work

bindkey -s in-string out-string binds in-string to out-string. If in-string is typed out-string is pushed back and treated as input.

The actual codes (for example ^[Oq) may be different on your system. You can press Ctrl+vfollowed by the key in question to get the code for your terminal.

 Snippet of ~/.zshrc from my machine (Macbook Pro 15" Retina):

# Setting Keypad info:
bindkey -s "^[Oq" "1"
bindkey -s "^[Or" "2"
bindkey -s "^[Os" "3"
bindkey -s "^[Ot" "4"
bindkey -s "^[Ou" "5"
bindkey -s "^[Ov" "6"
bindkey -s "^[Ow" "7"
bindkey -s "^[Ox" "8"
bindkey -s "^[Oy" "9"
bindkey -s "^[Op" "0"
bindkey -s "^[OX" "="
bindkey -s "^[Oo" "/"
bindkey -s "^[Oj" "*"
bindkey -s "^[Om" "-"
bindkey -s "^[Ok" "+"
bindkey -s "^[OM" "^M"
bindkey -s "^[On" "."