Re: find the path for cygwin root from windows script

[bertrand marquis <bertrand_marquis at yahoo dot fr>]

Luc Hermitte a écrit:

> Hello,
>
> * On Thu, Jun 17, 2004 at 11:12:00AM +0200, bertrand marquis <bertrand_marquis@yahoo.fr> wrote:
>  
>
> >   i need to be able to find where cygwin is install from a .bat script 
> > under windows to run cygwin programs.
> > Does anyone has a solution to do that automaticaly ?
> >    
>
>    cygpath -m /
I agree that is working but only if your path is set correctly and to do 
that you need to know where cygwin has been installed

> However, this solution requires that cygwin directories are visible from
> your $PATH. In other words, you won't really need to know where they are
> installed.
>
>  
Anyway i found a solution looking into the windows registry where this 
is writting when cygwin is installed.
Here is an example which start an xterm.

::start of file xterm.bat
@echo off
SET DISPLAY=127.0.0.1:0.0

REM Look for cygwin entry in windows registry
REGEDIT /E %Temp%.\tmp-cygwin.reg "HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus 
Solutions\Cygwin\mounts v2\/"> nul

REM Check if something has been found
if not exist %Temp%.\tmp-cygwin.reg goto EXITNOCYGWIN

REM Get the native key from windows registry result
FOR /F "tokens=1* delims==" %%A IN ('TYPE %Temp%.\tmp-cygwin.reg ^| FIND 
"native"') DO SET CYGWIN_ROOT=%%B> nul

REM Remove quotes
SET CYGWIN_ROOT=%CYGWIN_ROOT:"=%> nul

REM Remove temporary file
if exist %Temp%.\tmp-cygwin.reg del %Temp%.\tmp-cygwin.reg

REM Check if we have found something
if "%CYGWIN_ROOT%" == "" goto EXITNOCYGWIN

REM Export Cygwin path
SET 
PATH=.;%CYGWIN_ROOT%\bin;%CYGWIN_ROOT%\usr\X11R6\bin;%CYGWIN_ROOT%\opt\elinos\bin;%PATH%

run xterm

exit

:EXITNOCYGWIN
echo no cygwin entry has been found in registry
pause

::end of file

I only have two questions left:
- is HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2 
always the place where i can find the mounts in the registry

- is there a way to check that there is actually a X server running on 
127.0.0.1 from a windows script. As this if there isn't i could start one.



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