Mail Archives: cygwin/2006/11/12/19:08:14
checkX is a little utility I wrote that tests to see if (a) the X11
client DLLs are installed on the machine, and (b) the Xserver on
$DISPLAY (or -d x.x.x.x:x) is running and usable.
CHANGES:
* switch to cygport build framework
* massive internal reorganization of code. Instead of one big .c file,
now more logical divisions. Most of the functionality is delegated
to one entry point, checkX(). The application code (in checkX_main.c)
now handles only parsing options before delegating to checkX().
Eventually, I plan to make the core functionality into a library...
* checkX app has new option '--version'
It does not link against the Xll libraries itself, but attempts to
dlopen it, using a fuzzy name/path search. Both the search path and the
target name are explicitly overridable via commandline arguments.
In its default mode, checkX returns a 0 status if X is present, 1
otherwise, and generates no output. It is intended for use in scripts,
which need to intelligently decide whether to launch an X-based
application or a non-X (native MS Gui? console?) one.
=============================================================================
Usage: checkX [OPTION]...
Determines if X is installed, Xserver is running on specified DISPLAY
and will accept clients. Returns 0 if yes, nonzero otherwise
Options:
-h|--help print this help message and exit
-v|--version print version information and exit
-d|--display STR use STR instead of $DISPLAY
-l|--location print location of Xlib DLL on stdout
-a|--appendpath STR append STR to value of $PATH (cumulative)
-p|--prependpath STR prepend STR to value of $PATH (cumulative)
-r|--replacepath STR use STR instead of $PATH when searching
-x|--xlibname STR use exactly STR instd of fuzzy cygX11-n.dll
-t|--timeout FLT allow FLT seconds to connect with Xserver
defaults to 0.5, use 0.0 for Xlib's (safe, 12s)
timeout
--nogui disable informational popups
--notty disable stderr messages
--debug turn on debugging messages
--no-silent allow error, warning, and info messages
Note that -a defaults to '/usr/bin:/usr/X11R6/bin'. To eliminate the
default, use '-a ""'
=============================================================================
--
Charles Wilson
checkx volunteer maintainer for cygwin
To update your installation, click on the "Install Cygwin now" link on
the http://cygwin.com/ web page. This downloads setup.exe to your
system. Then, run setup and answer all of the questions.
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