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 XRDB(1)			X Version 11			     XRDB(1)
				 Release 6.1



 NAME
      xrdb - X server resource database utility

 SYNOPSIS
      xrdb [-option ...] [filename]

 DESCRIPTION
      Xrdb is used to get or set the contents of the RESOURCE_MANAGER
      property on the root window of screen 0, or the SCREEN_RESOURCES
      property on the root window of any or all screens, or everything
      combined.	 You would normally run this program from your X startup
      file.  Most X clients use the RESOURCE_MANAGER and SCREEN_RESOURCES
      properties to get user preferences about color, fonts, and so on for
      applications.  Having this information in the server (where it is
      available to all clients) instead of on disk, solves the problem in
      previous versions of X that required you to maintain defaults files on
      every machine that you might use.	 It also allows for dynamic changing
      of defaults without editing files.  The RESOURCE_MANAGER property is
      used for resources that apply to all screens of the display.  The
      SCREEN_RESOURCES property on each screen specifies additional (or
      overriding) resources to be used for that screen.	 (When there is only
      one screen, SCREEN_RESOURCES is normally not used, all resources are
      just placed in the RESOURCE_MANAGER property.) The file specified by
      filename (or the contents from standard input if - or no filename is
      given) is optionally passed through the C preprocessor with the
      following symbols defined, based on the capabilities of the server
      being used:

      SERVERHOST=hostname
	      the hostname portion of the display to which you are
	      connected.

      SRVR_name
	      the SERVERHOST hostname string turned into a legal identifier.
	      For example, "my-dpy.lcs.mit.edu" becomes
	      SRVR_my_dpy_lcs_mit_edu.

      HOST=hostname
	      the same as SERVERHOST.

      DISPLAY_NUM=num
	      the number of the display on the server host.

      CLIENTHOST=hostname
	      the name of the host on which xrdb is running.

      CLNT_name
	      the CLIENTHOST hostname string turned into a legal identifier.
	      For example, "expo.lcs.mit.edu" becomes CLNT_expo_lcs_mit_edu.





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 XRDB(1)			X Version 11			     XRDB(1)
				 Release 6.1



      RELEASE=num
	      the vendor release number for the server.	 The interpretation
	      of this number will vary depending on VENDOR.

      REVISION=num
	      the X protocol minor version supported by this server
	      (currently 0).

      VERSION=num
	      the X protocol major version supported by this server (should
	      always be 11).

      VENDOR="vendor"
	      a string literal specifying the vendor of the server.

      VNDR_name
	      the VENDOR name string turned into a legal identifier.  For
	      example, "MIT X Consortium" becomes VNDR_MIT_X_Consortium.

      EXT_name
	      A symbol is defined for each protocol extension supported by
	      the server.  Each extension string name is turned into a legal
	      identifier.  For example, "X3D-PEX" becomes EXT_X3D_PEX.

      NUM_SCREENS=num
	      the total number of screens.

      SCREEN_NUM=num
	      the number of the current screen (from zero).

      BITS_PER_RGB=num
	      the number of significant bits in an RGB color specification.
	      This is the log base 2 of the number of distinct shades of
	      each primary that the hardware can generate.  Note that it
	      usually is not related to PLANES.

      CLASS=visualclass
	      one of StaticGray, GrayScale, StaticColor, PseudoColor,
	      TrueColor, DirectColor.  This is the visual class of the root
	      window.

      CLASS_visualclass=visualid
	      the visual class of the root window in a form you can #ifdef
	      on.  The value is the numeric id of the visual.

      COLOR   defined only if CLASS is one of StaticColor, PseudoColor,
	      TrueColor, or DirectColor.

      CLASS_visualclass_depth=num
	      A symbol is defined for each visual supported for the screen.
	      The symbol includes the class of the visual and its depth; the



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 XRDB(1)			X Version 11			     XRDB(1)
				 Release 6.1



	      value is the numeric id of the visual.  (If more than one
	      visual has the same class and depth, the numeric id of the
	      first one reported by the server is used.)

      HEIGHT=num
	      the height of the root window in pixels.

      WIDTH=num
	      the width of the root window in pixels.

      PLANES=num
	      the number of bit planes (the depth) of the root window.

      X_RESOLUTION=num
	      the x resolution of the screen in pixels per meter.

      Y_RESOLUTION=num
	      the y resolution of the screen in pixels per meter.
	      SRVR_name, CLNT_name, VNDR_name, and EXT_name identifiers are
	      formed by changing all characters other than letters and
	      digits into underscores (_).  Lines that begin with an
	      exclamation mark (!) are ignored and may be used as comments.
	      Note that since xrdb can read from standard input, it can be
	      used to the change the contents of properties directly from a
	      terminal or from a shell script.

 OPTIONS
      xrdb program accepts the following options:

      -help   This option (or any unsupported option) will cause a brief
	      description of the allowable options and parameters to be
	      printed.

      -display display
	      This option specifies the X server to be used; see X(1).	It
	      also specifies the screen to use for the -screen option, and
	      it specifies the screen from which preprocessor symbols are
	      derived for the -global option.

      -all    This option indicates that operation should be performed on
	      the screen-independent resource property (RESOURCE_MANAGER),
	      as well as the screen-specific property (SCREEN_RESOURCES) on
	      every screen of the display.  For example, when used in
	      conjunction with -query, the contents of all properties are
	      output.  For -load, -override and -merge, the input file is
	      processed once for each screen.  The resources which occur in
	      common in the output for every screen are collected, and these
	      are applied as the screen-independent resources.	The
	      remaining resources are applied for each individual per-screen
	      property.	 This the default mode of operation.




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      -global This option indicates that the operation should only be
	      performed on the screen-independent RESOURCE_MANAGER property.

      -screen This option indicates that the operation should only be
	      performed on the SCREEN_RESOURCES property of the default
	      screen of the display.

      -screens
	      This option indicates that the operation should be performed
	      on the SCREEN_RESOURCES property of each screen of the
	      display.	For -load, -override and -merge, the input file is
	      processed for each screen.

      -n      This option indicates that changes to the specified properties
	      (when used with -load, -override or -merge) or to the resource
	      file (when used with -edit) should be shown on the standard
	      output, but should not be performed.

      -quiet  This option indicates that warning about duplicate entries
	      should not be displayed.

      -cpp filename
	      This option specifies the pathname of the C preprocessor
	      program to be used.  Although xrdb was designed to use CPP,
	      any program that acts as a filter and accepts the -D, -I, and
	      -U options may be used.

      -nocpp  This option indicates that xrdb should not run the input file
	      through a preprocessor before loading it into properties.

      -symbols
	      This option indicates that the symbols that are defined for
	      the preprocessor should be printed onto the standard output.

      -query  This option indicates that the current contents of the
	      specified properties should be printed onto the standard
	      output.  Note that since preprocessor commands in the input
	      resource file are part of the input file, not part of the
	      property, they won't appear in the output from this option.
	      The -edit option can be used to merge the contents of
	      properties back into the input resource file without damaging
	      preprocessor commands.

      -load   This option indicates that the input should be loaded as the
	      new value of the specified properties, replacing whatever was
	      there (i.e.  the old contents are removed).  This is the
	      default action.

      -override
	      This option indicates that the input should be added to,
	      instead of replacing, the current contents of the specified



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	      properties.  New entries override previous entries.

      -merge  This option indicates that the input should be merged and
	      lexicographically sorted with, instead of replacing, the
	      current contents of the specified properties.

      -remove This option indicates that the specified properties should be
	      removed from the server.

      -retain This option indicates that the server should be instructed not
	      to reset if xrdb is the first client.  This never be necessary
	      under normal conditions, since xdm and xinit always act as the
	      first client.

      -edit filename
	      This option indicates that the contents of the specified
	      properties should be edited into the given file, replacing any
	      values already listed there.  This allows you to put changes
	      that you have made to your defaults back into your resource
	      file, preserving any comments or preprocessor lines.

      -backup string
	      This option specifies a suffix to be appended to the filename
	      used with -edit to generate a backup file.

      -Dname[=value]
	      This option is passed through to the preprocessor and is used
	      to define symbols for use with conditionals such as

      -Uname  This option is passed through to the preprocessor and is used
	      to remove any definitions of this symbol.

      -Idirectory
	      This option is passed through to the preprocessor and is used
	      to specify a directory to search for files that are referenced
	      with #include.

 FILES
      Generalizes ~/.Xdefaults files.

 SEE ALSO
      X(1), Xlib Resource Manager documentation, Xt resource documentation

 ENVIRONMENT
      DISPLAY to figure out which display to use.

 BUGS
      The default for no arguments should be to query, not to overwrite, so
      that it is consistent with other programs.





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 XRDB(1)			X Version 11			     XRDB(1)
				 Release 6.1



 AUTHORS
      Bob Scheifler, Phil Karlton, rewritten from the original by Jim Gettys




















































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