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Vim's ex mode is similar to the command line mode which is designed for Batch processing.

Vim in Ex mode (also aliases as ex) is useful when:

  • You're in need of editing (multiple) files non-interactively (as part of the script).
  • Your connection is very slow or screen is not updated after your actions.
  • Mappings and abbreviations are disabled.
  • Common keys such as Escape or Control doesn't work.

There is Ex mode (vim -e) and improved Ex mode which allows for more advanced commands than the vi compatible Ex-mode (vim -E).