1# NAME
2
3**sct** - screen temperature control
4
5# SYNOPSIS
6
7**sct**
8\[*temperature*]
9
10# DESCRIPTION
11
12This utility can be used to change the screen temperature.
13
14A valid
15*temperature*
16value is between 1000 and 10000.
17If the
18*temperature*
19argument is not provided or its value is invalid
20then the screen temperature is set to the default value of 6500.
21
22# EXAMPLES
23
24Campfire:
25
26	sct 4500
27
28Dust storm on Mars:
29
30	sct 2000
31
32Coffee-free all nighter:
33
34	sct 8000
35
36# DIAGNOSTICS
37
38**Failed to get screen resources**
39Usually those messages mean that
40**sct**
41cannot connect to the
42X(7)
43server.
44
45**Failed to open X display %s**
46See
47**Failed to get screen resources**.
48
49# SEE ALSO
50
51redshift(1),
52xrandr(1)
53
54The original blog post about
55**sct**
56by Ted Unangst:
57[https://www.tedunangst.com/flak/post/sct-set-color-temperature](https://www.tedunangst.com/flak/post/sct-set-color-temperature)
58
59# HISTORY
60
61The
62**sct**
63utility was written by
64Ted Unangst <[tedu@OpenBSD.org](mailto:tedu@OpenBSD.org)>.
65
66# AUTHORS
67
68This
69manual page was written by
70Mateusz Piotrowski <[0mp@FreeBSD.org](mailto:0mp@FreeBSD.org)>.
71