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xset(1X)							      xset(1X)

NAME
       xset - user preference utility for X

SYNOPSIS
       xset  [-display	display]  [-b] [b on/off] [b[volume[pitch[duration]]]]
       [[-] bc] [-c] [c on/off] [c [volume]] [[-+]  dpms]  [dpms[standby-time]
       [suspend-time]	[off-time]]   [dpms   force   mode]   [[-+]  fp	 [-+=]
       path[,path[,...]]] [fp default] [fp rehash] [[-]	 led  [integer]]  [led
       on/off]	 [m[ouse]   [accel_mult[/accel_div]   [threshold]]]   [m[ouse]
       default]	 [p  pixel  color]   [[-]   r	[keycode]]   [r	  on/off]   [s
       [length[period]]]  [s  blank/noblank] [s expose/noexpose] [s on/off] [s
       default] [s activate] [s reset] [q]

OPTIONS
       This option specifies the server to use; see X(1X).  The b option  con‐
       trols  bell volume, pitch and duration. This option accepts up to three
       numerical parameters, a preceding dash(-), or a 'on/off' flag.	If  no
       parameters  are	given,	or  the 'on' flag is used, the system defaults
       will be used. If the dash or 'off' are given, the bell will  be	turned
       off.  If only one numerical parameter is given, the bell volume will be
       set to that value, as a percentage of its maximum. Likewise, the second
       numerical  parameter  specifies the bell pitch, in hertz, and the third
       numerical parameter specifies the duration in milliseconds.  Note  that
       not  all hardware can vary the bell characteristics.  The X server will
       set the characteristics of the bell as closely as it can to the	user's
       specifications.	 The  bc option controls bug compatibility mode in the
       server, if possible; a preceding dash(-) disables the  mode,  otherwise
       the  mode  is  enabled.	 Various pre-R4 clients pass illegal values in
       some protocol requests, and pre-R4 servers did not  correctly  generate
       errors  in  these  cases.  Such clients, when run against an R4 server,
       will terminate abnormally or otherwise fail to operate  correctly.  Bug
       compatibility  mode  explicitly	reintroduces  certain  bugs into the X
       server, so that many such clients can still be run.  This  mode	should
       be used with care; new application development should be done with this
       mode disabled.  The server must support the MIT-SUNDRY-NONSTANDARD pro‐
       tocol  extension	 in  order for this option to work.  The c option con‐
       trols key click. This option can take an optional  value,  a  preceding
       dash(-),	 or  an	 'on/off'  flag.  If  no parameter or the 'on' flag is
       given, the system defaults will be used. If the dash or 'off'  flag  is
       used,  keyclick will be disabled. If a value from 0 to 100 is given, it
       is used to indicate volume, as a percentage  of	the  maximum.	The  X
       server  will  set the volume to the nearest value that the hardware can
       support.	 Enables the VESA Display Power Management  Signalling	(DPMS)
       features	 of  the  X  Server regardless of the operating system's power
       management state.  It is unnecessary to enable  DPMS  mode  with	 +dpms
       when  using the dpms switch to change the dwell times or the dpms force
       switch to force a mode, since those switches will automatically	enable
       the  DPMS features of the X Server.  DPMS mode defaults are dictated by
       the kernel's power management subsystem. DPMS should  only  be  enabled
       for  systems with DPMS-compliant hardware.  Disables the VESA DPMS fea‐
       tures of the X Server regardless of the operating system's  power  man‐
       agement	state.	 DPMS mode defaults are dictated by the kernel's power
       management subsystem.  Enables the VESA DPMS features  of  the  XServer
       and  defines  dwell  times for it, regardless of the operating system's
       power management state. Specify the number of seconds  to  wait	before
       starting	 each  particular mode.	 All three values must be supplied and
       each subsequent value must be greater than or equal to the  next,  with
       the exception of 0.  A value of 0 will disable a particular mode and it
       is independent of the other dwell times.	 For instance,	if  the	 value
       for  standby  mode  is 300 seconds, the value for suspend mode can be 0
       seconds, but the value for off mode must be greater than	 or  equal  to
       300  seconds.   DPMS  default  dwell times are dictated by the kernel's
       power management subsystem.  Enables the	 VESA  DPMS  features  of  the
       XServer	and forces a particular mode, effective immediately.  Possible
       modes include on, standby, suspend, and off.  The  fp=  sets  the  font
       path  to the entries given in the path argument. The entries are inter‐
       preted by the server, not by the client. Typically they	are  directory
       names or font server names, but the interpretation is server-dependent.
       The entire font path must be valid; if any element is invalid, the path
       is  rejected.  The default argument causes the font path to be reset to
       the server's default.  The rehash argument resets the font path to  its
       current	value,	causing the server to reread the font databases in the
       current font path.  This is generally only used when adding  new	 fonts
       to a font directory (after running mkfontdir to recreate the font data‐
       base).  The -fp and fp- options remove elements from the	 current  font
       path.   They must be followed by a comma-separated list of entries. The
       entire font path must be valid; if any element is invalid, the path  is
       rejected.   The	+fp and fp+ options prepend and append elements to the
       current font path, respectively.	 They must be followed by a comma-sep‐
       arated  list  of	 entries.   The entire font path must be valid; if any
       element is invalid, the path is rejected.  The led option controls  the
       keyboard LEDs. This controls the turning on or off of one or all of the
       LEDs.  It accepts an  optional  integer,	 a  preceding  dash(-)	or  an
       'on/off'	 flag. If no parameter or the 'on' flag is given, all LEDs are
       turned on. If a preceding dash or the flag 'off' is given, all LEDs are
       turned  off.  If	 a  value  between 1 and 32 is given, that LED will be
       turned on or off depending on the existence of a preceding dash. A com‐
       mon  LED	 which can be controlled is the “Caps Lock” LED.  “xset led 3”
       would turn led #3 on.  “xset -led 3” would turn it off. The  particular
       LED  values  may	 refer to different LEDs on different hardware.	 The m
       option controls the mouse parameters. The parameters for the mouse  are
       `acceleration'  and  `threshold'.  The acceleration can be specified as
       an integer, or as a simple fraction.  The mouse,	 or  whatever  pointer
       the  machine is connected to, will go `acceleration' times as fast when
       it travels more than `threshold' pixels in a short time.	 This way, the
       mouse can be used for precise alignment when it is moved slowly, yet it
       can be set to travel across the screen in a flick  of  the  wrist  when
       desired.	  One  or both parameters for the m option can be omitted, but
       if only one is given, it will be interpreted as the acceleration. If no
       parameters  or  the flag 'default' is used, the system defaults will be
       set.  The p option controls pixel color values. The parameters are  the
       color map entry number in decimal, and a color specification.  The root
       background colors may be	 changed  on  some  servers  by	 altering  the
       entries	for  BlackPixel and WhitePixel. Although these are often 0 and
       1, they need not be.  Also, a server may choose to allocate those  col‐
       ors privately, in which case an error will be generated.	 The map entry
       must not be a read-only color, or an error will result.	The  r	option
       controls	 the  autorepeat.   If	a  preceding dash or the 'off' flag is
       used, autorepeat will be disabled.  If no parameters or the  'on'  flag
       is used, autorepeat will be enabled. If a specific keycode is specified
       as a parameter, autorepeat for that keycode  is	enabled	 or  disabled.
       The  s  option  lets  you  set the screen saver parameters. This option
       accepts up to two numerical  parameters,	 a  'blank/noblank'  flag,  an
       'expose/noexpose'  flag, an 'on/off' flag, an 'activate/reset' flag, or
       the 'default' flag. If no parameters or the 'default' flag is used, the
       system  will  be	 set  to its default screen saver characteristics. The
       'on/off' flags simply turn the screen saver functions on	 or  off.  The
       'activate'  flag	 forces	 activation of screen saver even if the screen
       saver had been turned off. The  'reset'	flag  forces  deactivation  of
       screen  saver if it is active.  The 'blank' flag sets the preference to
       blank the video (if the hardware can do so) rather than display a back‐
       ground  pattern,	 while 'noblank' sets the preference to display a pat‐
       tern rather than blank the video. The 'expose' flag sets the preference
       to  allow  window  exposures (the server can freely discard window con‐
       tents), while 'noexpose' sets the preference to	disable	 screen	 saver
       unless  the  server can regenerate the screens without causing exposure
       events. The length and period parameters for the screen saver  function
       determines  how	long  the server must be inactive for screen saving to
       activate, and the period to change the background pattern to avoid burn
       in.  The	 arguments  are	 specified  in	seconds. If only one numerical
       parameter is given, it will be used for the length.  The q option gives
       you information on the current settings.

       These settings will be reset to default values when you log out.

       Note  that  not	all  X	implementations are guaranteed to honor all of
       these options.

DESCRIPTION
       This program is used to set various user preference options of the dis‐
       play.

SEE ALSO
       X(1X), Xdec(1X), xmodmap(1X), xrdb(1X), xsetroot(1X)

AUTHOR
       Bob  Scheifler,	MIT  Laboratory for Computer Science; David Krikorian,
       MIT Project Athena (X11 version)

								      xset(1X)
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