X Window System environment variables
Table 1 provides a list of environment variables that can be set to affect the behavior of X Window System applications.
Environment variable | Description |
---|---|
DISPLAY | Contains the name of the display to be used. There is no default value. See note 1. |
ICEAUTHORITY | This variable identifies where the authentication information is located. |
LANG | Determines the locale category for native language, local customs, and coded character set in the absence of the LC_ALL and other LC_* ( LC_COLLATE, LC_CTYPE, LC_MESSAGES, LC_MONETARY, LC_NUMERIC, LC_TIME) environment variables. See note 2. |
LC_CTYPE | Determine the locale category for character handling functions, such as tolower(), toupper(), and isalpha(). This environment variable determines the interpretation of sequences of bytes of text data as characters (for example, single as opposed to multibyte characters), the classification of characters (for example, alpha, digit, graph), and the behavior of character classes. |
SESSION_MANAGER | If defined, causes a Session Shell widget to connect to a session manager. There is no default value. |
XAPPLRESDIR | Specifies the directory to search for files that contain application defaults. |
XAUTHORITY | Specifies the name of the authority file on the local host. |
XCMSDB | Specifies the name of a color name database file. |
XENVIRONMENT | Contains the full path name of the file that contains resource defaults. There is no default value. |
XFILESEARCHPATH | Used by XtResolvePathname as a default path. There is no default value. |
XKEYSYMDB | Specifies the location of the XKEYSYMDB. |
XLOCALEDIR | Specifies the directory to search for locale files. The default value is /usr/lib/X11/locale. |
XMODIFIERS | Can be set to contain additional information important for the current locale setting. See note 3. |
XUSERFILESEARCHPATH | Specifies where to find the personal X resources files used to configure an application. |
XWTRACE | Controls the generation of socket-level communications
traces between Xlib and the X Window System server. These traces are
as follows:
There is no default value. The output is sent to stderr. |
XWTRACELC | If defined, causes a trace of locale-sensitive
routines. Possible values are:
There is no default value. The output is sent to stderr. See note 4. |
Notes:
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