npm

ddcctl

Control external monitor brightness via DDC protocol on macOS

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Source

About

DDC monitor controls (brightness) for Mac OSX command-line

Commands

ddcctl

Examples

Set monitor brightness to 75%$ ddcctl -d 1 -b 75
Increase brightness by 10% on display 2$ ddcctl -d 2 -b +10
List all connected DDC-compatible monitors$ ddcctl -l