In vim how to map “save” to ctrl-s

Question

In vim, how can I map \"save\" (:w) to ctrl-s.

I am trying \"map\" the command, but xterm freezes when I press ctrl-

Answer 1

Mac OSX Terminal + zsh?

In your .zprofile

alias vim="stty stop '' -ixoff; vim"

Why?, What's happening? See Here, but basically for most terminals ctrl+s is already used for something, so this alias vim so that before we run vim we turn off that mapping.

In your .vimrc

nmap  :w
imap  :wa

Why? What's happening? This one should be pretty obvious, we're just mapping ctrl+s to different keystrokes depending on if we are in normal mode or insert mode.