setting and activation of environment variables via batch script

[sg_winforum]

Hello,

I would like to use relative links for Windowsexplorer. The only way I found was to set and environment variable and then use this variable for the link.

I tried to set the environment variable with the batch command "reg add". This creates/changes the registry entry. But the variable is not yet active.

With the script below the following happens:

Step 1:

"c" will create the variable _test. This can be checked by pressing "r".

If I open a new cmd and enter

"set _test", the variable "_test" results as not defined.

Step 2:

If I open start - settings - control panel - system - advanced - Environment Variables, _test is defined.

If I click "Ok" (or "Edit" - "Ok" - "Ok") and then open a new cmd and enter

"set _test", the variable "_test" is correctly defined.

Now my question:

Does anyone know, how to perform Step 2 automatically without a new login?

BR

greg

Here is the test script:

@ECHO OFF
echo:
echo:
ECHO This will set an environment variable "_test" 
:BEGINN
echo:
Echo use current drive path © use Server path (s) 
Echo open regedit and show variable ®
Echo Abort (a)
set /P eingabe=
if %eingabe% == c goto current
if %eingabe% == s goto server
if %eingabe% == r goto open_regedit
if %eingabe% == a goto ENDE
goto BEGINN

:current

set temp_current_folder=%CD%
reg add HKEY_CURRENT_USER\Environment /v _test /d "%temp_current_folder%" /f
rem is there a difference? reg add HKCU\Environment /v _test /d "%temp_current_folder%" /f
ECHO:
ECHO _test has been set to 
ECHO:
reg query HKEY_CURRENT_USER\Environment /v _test

GOTO BEGINN

:server

reg add HKEY_CURRENT_USER\Environment /v _test /d "\\test_server\test_path" /f
ECHO:
ECHO _test has been set to 
ECHO:
reg query HKEY_CURRENT_USER\Environment /v _test

GOTO BEGINN

:open_regedit
set LastKey="HKEY_CURRENT_USER\Environment"

set Key=HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Regedit
reg add %Key% /f /v "LastKey" /d %LastKey%
start regedit.exe


GOTO BEGINN


:ENDE

[ɹəuəllıʍ ʇɐb]

"set _test", the variable "_test" results as not defined.

How do you determine that the variable is not defined?

P.S. to show code in forum posts, it is best done within

 tags (or [html] tags in case of HTML code). I have modified your post accordingly.

[sg_winforum]

Hi,

to see, if the variable is defined:

start - run - cmd

type

"set _test"

Then I read the answer:

"Environment variable _test not defined"

or in case it was set to "old_value" (before login) and afterwards to "new_value":

type

"set _test"

Then I read the answer:

"_test=old_value"

BR

[ɹəuəllıʍ ʇɐb]

Maybe reading the Help file for the set command will give you some ideas (see attachment).

set.txt

[sg_winforum]

Maybe reading the Help file for the set command will give you some ideas (see attachment).

set.txt

Thanks

I had a look on this but I didn't find anything. The set command is always temporary.

Then I decided to try out the Windows XP SP2 Support Tools. (It's not the best solution, because an aditional program is required...)

The solution is:

Use the setx.exe from

http://www.microsoft.com/downloads/details...;displaylang=en

I tried this on WinXPx32 and WinXPx64 just by using the setx.exe without installing the support tools. This works fine:

Setting variable _test = "test1"

\\server_with_setx\path_to_setx\setx.ex _test "test1"

or, if setx.exe has been copied to C:\WINNT (on a x32 machine):

setx _test "test1"

Deleting _test:

\\server_with_setx\path_to_setx\setx.exe _test ""

or

setx _test ""

(

It's quite interesting:

reg add HKEY_CURRENT_USER\Environment /v _test /d "test1" /f

setx _test2 "test2"

results in both variable beeing available to a new cmd

)

So far

Greg