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

Ctrl+S is a common command to terminals to stop updating, it was a way to slow the output so you could read it on terminals that didn't have a scrollback buffer. First find out if you can configure your xterm to pass Ctrl+S through to the application. Then these map commands will work:

noremap            :update
vnoremap           :update
inoremap           :update

BTW: if Ctrl+S freezes your terminal, type Ctrl+Q to get it going again.