You can do code blocks on HN by prefixing your lines with four spaces.

    #!/bin/bash
    swaymsg create_output
    OUTPUT=$(swaymsg -r -t get_outputs | jq '.[].name' | grep HEADLESS | tr -d '"')
    # No need to reduce res, it defualts to 1080p
    # swaymsg output "$OUTPUT" resolution 1280x720
    wl-mirror "$OUTPUT"
    swaymsg output "$OUTPUT" unplug