GAMMA(6D)                                                            GAMMA(6D)


NAME
     gamma - get or set the system gamma value

SYNOPSIS
     /usr/sbin/gamma [newgamma]

DESCRIPTION
     gamma with no arguments prints the current gamma correction value.  gamma
     followed by a floating point argument sets the gamma correction value.
     This system resource can only be changed by the super user. Positive
     numbers less than 20.0 are allowable values for gamma. On systems with
     gamma hardware, the X server should be terminated and restarted.  This
     can be done via kill(1) or, if xdm(1) is used, by changing the
     terminateServer entry in /usr/lib/X11/xdm/xdm-config to True.  Colors in
     X clients may not look correct until the server is restarted.

SEE ALSO
     XSGI(1), xdm(1), gammaramp(3G)

NOTES
     IRIS-4D G, GT, GTX, VGX, VGXT, XS, XS24, Elan, and Personal Iris systems
     have gamma hardware.

FILES
     /etc/config/system.glGammaVal


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