Popular Unix Text Editors and How to Exit Them (darkdepths.net)

Missing Joe.

Or, you could just do the following.

    ## Ctrl-z (suspend current application)
    $ kill -9 %1
    

That assumes you want to lose your changes which I suspect is okay in this situation since it's 'Howto Quit..' not 'Howto do Make Changes, Write, and Quit...'

Vi and Vim are very different in this regard: (Most versions of?) vim shows how to quit both on start and when pressing ^C.

this assumes that the content is unchanged or already saved for every case.

:q! if there are changes to discard in vim.