gtk-redshift(1) on Linux
The text 7139fd44bd45, as Debian 7 (Wheezy) shipped it.
Set color temperature of display according to time of day (gtk-Frontend).
Flags it lists
-
-O -
-V -
-b -
-c -
-g -
-h -
-l -
-m -
-o -
-r -
-t -
-v -
-x