BRIGHTCTL(1)

NAME
brightctl - frontend for ddc-brightness-daemon

SYNOPSIS
brightctl [OPTIONS...]

DESCRIPTION

brightctl controls display brightness by interacting with ddc-brightness-daemon. By default it operates on all displays and it supports both relative and absolute brightness adjustments. For the context of this program brightness is always expressed as a percentage, so to set the displays to max brightness you can use --set=100.

OPTIONS

-d, --display=NUM
    Optional, sets the number of the display to change the brightness of. Display numbers can be found with -l/--list. By default all connected displays are changed.

-l, --list
    List all connected displays along with some basic metadata - the display model name, the manufacturer, product code, serial number and manufacture date.

-v, --version
    Print the version of brightctl

-h, --help
    Print a help message

--get
    Print the brightness of the selected displays.

--set=NUM
    Set the brightness of the selected displays to NUM.

--inc=NUM
    Increase the brightness of the selected displays by NUM. Note: This takes a signed argument so if you wish to decrement by passing a negative number you can do so with --inc.

--dec=NUM
    Decrease the brightness of the selected displays by NUM.

EXIT STATUS
If an error occurred 1, else 0.