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

vim

# ~/.vimrc
nnoremap  :w # normal mode: save
inoremap  :wl # insert mode: escape to normal and save
vnoremap  :w # visual mode: escape to normal and save

zsh (if you use)

# ~/.zshrc
# enable control-s and control-q
stty start undef
stty stop undef
setopt noflowcontrol

bash (if you use)

# ~/.bash_profile or ~/.bashrc
# enable control-s and control-q
stty -ixon