/usr/share/doc/redshift/example-redshift.conf is in redshift 1.11-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ; Global settings
[redshift]
temp-day=5700
temp-night=3500
transition=1
gamma=0.8:0.7:0.8
location-provider=manual
adjustment-method=vidmode
; The location provider and adjustment method settings
; are in their own sections.
[manual]
lat=55.0
lon=12.0
; In this example screen 1 is adjusted by vidmode. Note
; that the numbering starts from 0, so this is actually
; the second screen.
[vidmode]
screen=1
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