COTEMP

NAME

cotemp - set the Color Temperature

SYNOPSIS

cotemp [ -dlv ] [ -s screen ] [ -c crtc ] [ -t temperature ] [ -b brightness ] [ -p profile ]

DESCRIPTION

cotemp is a simple program that uses Xrandr to apply a color temperature.

It can also set the brightness, or what someone would call it “fake brightness”, since cotemp doesn’t access the hardware to change that, rather it changes the values of the colors, giving them a darker tone all inside X11.

OPTIONS

Without any arguments, cotemp will start to run every interval seconds forever. If -s flag is not present, the properties will be applied to all screens.

-b, –brightness brightness: Sets the linear brightness and exits: [0.0 … 1.0].
-c, –crtc CRTC: Zero-based index of CRTC to use.
-d, –delta: Shift the temperature by the temp (-t) argument value.
-l, –list: Print current temperature and brightness of screen(s) and exits.
-s, –screen screen: Zero-based index of which screen to use.
-t, –temperature temp: Sets the temperature and exits. Default value is 6500 and can’t be lower than 700. If temp is 0, default value is applied.
-p, –profile profilename: Sets the temperature and brightness of profilename and exits.
-v, –version: Prints the version and exits.

CONFIGURATION

cotemp is customized by creating a custom config.h and (re)compiling the source code. This keeps it simple, since reading a config file isn’t that hard (but adds unneeded complexity), and in many aspects more customizable. I try my best to comment about the variables in config.h, since they don’t do anything crazy, so it should be very straight foward what does what.

BUGS

https://github.com/explosion-mental/cotemp

This work is licensed under CC-BY-SA 2.0, unless specified otherwise. Year: 2022