redshift(1) on Linux
The text ce7cc0880d48, as Debian 8 (Jessie), Debian 7 (Wheezy) shipped it.
Set color temperature of display according to time of day.
Flags it lists
-
-O -
-V -
-b -
-c -
-g -
-h -
-l -
-m -
-o -
-r -
-t -
-v -
-x