redshift 1.11

Usage: redshift -l LAT:LON -t DAY:NIGHT [OPTIONS...] Set color temperature of display according to time of day. -h Display this help message -v Verbose output -V Show program version -b DAY:NIGHT Screen brightness to apply (between 0.1 and 1.0) -c FILE Load settings from specified configuration file -g R:G:B Additional gamma correction to apply -l LAT:LON Your current location -l PROVIDER Select provider for automatic location updates (Type `list' to see available providers) -m METHOD Method to use to set color temperature (Type `list' to see available methods) -o One shot mode (do not continuously adjust color temperature) -O TEMP One shot manual mode (set color temperature) -p Print mode (only print parameters and exit) -x Reset mode (remove adjustment from screen) -r Disable temperature transitions -t DAY:NIGHT Color temperature to set at daytime/night The neutral temperature is 6500K. Using this value will not change the color temperature of the display. Setting the color temperature to a value higher than this results in more blue light, and setting a lower value will result in more red light. Default values: Daytime temperature: 5500K Night temperature: 3500K Please report bugs to <https://github.com/jonls/redshift/issues>