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X11R7.4 - man page for xgamma (x11r4 section 1)

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xgamma(1)										xgamma(1)

       xgamma - Alter a monitor's gamma correction through the X server

       xgamma  [-display display] [-screen screen] [-quiet] [-gamma f.f | [[-rgamma f.f] [-ggamma
       f.f] [-bgamma f.f]]]

       xgamma allows X users to query and alter the gamma correction of a monitor via the X video
       mode extension (XFree86-VidModeExtension).

       If  no  value  for the gamma correction is given via the -gamma or -rgamma/-ggamma/-bgamma
       options, xgamma prints the current gamma correction of the display.

       -display display
	       This argument allows you to specify the server to connect to; see X(7).

       -screen screen
	       When multiple displays are configured as a single  logical  display,  this  option
	       allows you to select the screen you wish to change.

       -quiet  Silence the normal output of xgamma

       -help   Print out the `Usage:' command syntax summary.

       -gamma f.f
	       The  gamma  correction  can either be defined as a single value, or separately for
	       the red, green and blue components. This argument specifies the	gamma  correction
	       as a single value.

       -rgamma f.f
	       This argument specifies the red component of the gamma correction.

       -ggamma f.f
	       This argument specifies the green component of the gamma correction.

       -bgamma f.f
	       This argument specifies the blue component of the gamma correction.

       DISPLAY To get default host and display number.

       This  client  changes the internal values of the gamma correction for the Xserver. Whether
       or not these values are respected depends on the video drivers.

       The gamma values are passed to the Xserver with 3 decimal places of accuracy.


       Kaleb S. Keithley, X Consortium.
       David Dawes, David Bateman

X Version 11				   xgamma 1.0.2 				xgamma(1)
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