To build from the command line without the GUI.

# displayctl
The source is [here](https://github.com/pbkhrv/os-x-sleep-wake-display)

To build
```bash
gcc -o displayctl main.c -framework IOKit -framework CoreFoundation
```

Or a Makefile
```make
all: displayctl

displayctl: main.c
        gcc -o displayctl -framework IOKit -framework CoreFoundation main.c
```