1REDSHIFT:(1)                     User Commands                    REDSHIFT:(1)
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NAME

6       redshift - Set color temperature of display according to time of day.
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SYNOPSIS

9       redshift -l LAT:LON -t DAY:NIGHT [OPTIONS...]
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DESCRIPTION

12       redshift adjusts the color temperature of your screen according to your
13       surroundings. This may help your eyes hurt less if you are  working  in
14       front of the screen at night.
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16       The  color  temperature  is set according to the position of the sun. A
17       different color temperature is set during  night  and  daytime.  During
18       twilight  and early morning, the color temperature transitions smoothly
19       from night to daytime temperature to allow your eyes to slowly adapt.
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OPTIONS

22       -h     Display this help message
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24       -v     Verbose output
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26       -V     Show program version
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28       -b N   Screen brightness to apply (max is 1.0)
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30       -c FILE
31              Load settings from specified configuration file
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33       -g R:G:B
34              Additional gamma correction to apply
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36       -l LAT:LON
37              Your current location
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39       -l PROVIDER
40              Select provider for automatic location updates (Type  `list'  to
41              see available providers)
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43       -m METHOD
44              Method  to  use  to  set  color  temperature (Type `list' to see
45              available methods)
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47       -o     One shot mode (do not continously adjust color  temperature)  -O
48              TEMP One shot manual mode (set color temperature)
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50       -x     Reset mode (remove adjustment from screen)
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52       -r     Disable temperature transitions
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54       -t DAY:NIGHT
55              Color temperature to set at daytime/night
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57       The  neutral temperature is 6500K. Using this value will not change the
58       color temperature of the display. Setting the color  temperature  to  a
59       value  higher than this results in more blue light, and setting a lower
60       value will result in more red light.
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62       Default values:
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64              Daytime temperature: 5500K Night temperature: 3700K
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EXAMPLE

67       Example for Copenhagen, Denmark:
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69              $ redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m vidmode -v
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AUTHOR

72       redshift was written by Jon Lund Steffensen <jonlst@gmail.com>.
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74       Both redshift and this manual page are released under the  GNU  General
75       Public License, version 3.
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BUGS

78       Please report bugs to <https://bugs.launchpad.net/redshift>
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KNOWN ISSUES

81       Redshift  won’t  affect  the  color  of  your cursor when your graphics
82       driver is configured to use hardware  cursors.  Some  graphics  drivers
83       have an option to disable hardware cursors in xorg.conf.
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87redshift                          August 2010                     REDSHIFT:(1)