mirror-displays

A Mac app and command-line tool for fiddling with display mirroring: on/off/toggle

usage: mirror [option]    Only the first option passed will be applied
  -h            Print this usage and exit.
  -t            Toggle mirroring (default behavior)
  -on           Turn Mirroring On
  -off          Turn Mirroring Off
  -q            Query the Mirroring state and write "on" or "off" to stdout
  -l A B        Makes display at index B mirror the display at index A

Installing

The mirror command line tool is available via a Homebrew tap:

brew install fcanas/tap/mirror-displays

or

brew tap fcanas/tap
brew install mirror-displays