bend

What is this

MacBooks have a sensor that reports the angle of the lid hinge. macOS doesn’t expose it as a number, but bend does, via IOKit.

Small native binary. Useful for scripting around lid position, triggering scripts when the lid moves past a threshold, or just reading the current angle.

Quick start

$ bend
96

# Live feed
bend --watch

# Block until the lid closes past 30°
bend --wait-until 30-

Documentation

• Usage — modes, options, threshold syntax, exit codes
• Build from source

License

MIT — see LICENSE.