It always feels more logical to me to just type "Ctrl-P Ctrl-A sudo" (previous history line, beginning of line, add missing sudo) than typing "sudo !!" or "sudo

It always feels more logical to me to just type "Ctrl-P Ctrl-A sudo" (previous history line, beginning of line, add missing sudo) than typing "sudo !!" or "sudo !!<tab>" if you need to edit the substitution. Same thing for the last argument, it's easily edited if you know the right shortcuts: Ctrl-P Alt-B Ctrl-U. (Works for bash, for zsh you need http://stackoverflow.com/q/3483604/414272 http://stackoverflow.com/q/3483604/414272). That said, I didn't know about Alt-.