Repeatedly run a command until failure (source)

#!/bin/bash
while "$@"; do :; done

Esc . : Repeat last param
Ctrl U : Cut backwards
Ctrl K : Cut forwards
Ctrl W : Cut previous word
Ctrl Y : Paste
Ctrl V : Verbatim / Insert literal control characters
Ctrl D / Esc D : Cut current character
Ctrl H : Cut prev character
Ctrl I / Tab : Autocomplete
Ctrl _ / Ctrl X, Ctrl U : Undo
Ctrl T : Swap characters before cursor
Esc T : Swap words before cursor
Esc C : Capitalize current character and move to end of the word

Esc F : Forward 1 word
Esc B : Backward 1 word
Ctrl A : Go to line start
Ctrl E : Go to line end
Ctrl F : Forward 1 character
Ctrl B : Back 1 character
Ctrl XX : Toggle between positions in a line
Ctrl R : Search history

Ctrl L : Clear screen
Ctrl C : Kill running command

!! : Run previous command
!<something> : Run last command starting with <something>
!<something>:p : Display last command starting with <something>
!<n> : Run nth command in history
!^ : First arg of last command
!$ : Last arg of last command
^find^replace^ : Substitute in last command and run

bindkey  # List keymap in zsh for main (emacs/viins)
zle -al  # List of all commands to use in bindings
bindkey -e  # emacs mode
bindkey -v  # vi mode