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xrdb(1X)
X11R6
NAME
xrdb - X server resource database utility
SYNOPSIS
xrdb [-option...] [filename]
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(1X). 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.
-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 will not 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 (that is, 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 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 #ifdef.
-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.
DESCRIPTION
The xrdb command 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 .
KEYBOARD_PCSTYLE
The symbol to use with a Personal Computer style keyboard from any
vendor. Use DECKEYBOARD_PCSTYLE if you are using a PC-style keyboard
such as the LK443 or LK444.
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.
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 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.)
DECKEYBOARD_LKX01
The symbol to use with a keyboard such as the LK401 or LK201 on the
Tru64 UNIX operating system.
DECKEYBOARD_LKX01_NOESCAPE
The symbol to use with a keyboard such as the LK401 or LK201 on the
OpenVMS operating system or with VXT.
DECKEYBOARD_PCSTYLE
The symbol to use with a Personal Computer style keyboard such as the
LK443 or LK444.
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.
FILES
Generalizes ~/.Xdefaults files.
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.
SEE ALSO
X(1X), Xlib Resource Manager Documentation, Xt Resource Documentation
AUTHORS
Bob Scheifler, Phil Karlton, rewritten from the original by Jim Gettys
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