RE: Windows environment variables - thanks

["Sánchez Sanz, Javier" <jssanz () indra es>]

Hello again, thanks for your help. I used Sentenv.exe also, but it only sets them, but it doesn't remove them. What I 
have done finally is to use WMI scripting (that is what I wanted to know!), and I've done all I want.

FYI:
TO CREATE an entry -user var- (In HKEY_CURRENT_USER\Environment, there is where the user variables are stored). Create 
a .vbs file with the following code, execute it followed with the name of the variable and the value as arguments:
-----------------------------------------
const HKEY_CURRENT_USER = &H80000001
Set objArgs = WScript.Arguments
strComputer = "."

Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" &_
strComputer & "\root\default:StdRegProv")

strKeyPath = "Environment"
Key = objArgs(0)
Value = objArgs(1)
oReg.SetExpandedStringValue HKEY_CURRENT_USER,strKeyPath,Key,Value
-----------------------------------------

And to DELETE IT. This sample just take the name of the variable to delete as argument:
---------------------------------------------
const HKEY_CURRENT_USER = &H80000001
Set objArgs = WScript.Arguments
strComputer = "."

Set oReg=GetObject("winmgmts:{impersonationLevel=impersonate}!\\" &_
strComputer & "\root\default:StdRegProv")

strKeyPath = "Environment"
strValueName = objArgs(0)

oReg.DeleteValue HKEY_CURRENT_USER,strKeyPath,strValueName
------------------------------------------------------------------

And it can be runned at cmd console and it takes effect in the user session inmediately.

Thanks again for your help.

Javi

-----Mensaje original-----
De: Wood, Richard [mailto:Richard.Wood () wellington co uk]
Enviado el: jueves, 04 de septiembre de 2003 10:19
Para: Sánchez Sanz, Javier
CC: 'security-basics () securityfocus com'
Asunto: RE: Windows environment variables


Hi Javi,

For setting and removing environment variables from the command line, use "setenv.exe". This is a freeware replacement 
for SetX, with better functionality. Also try "pathman.exe" for adding or removing sections from path. This is a 
Microsoft Resource Kit tool.

A quick search on Google should give you all the info you need, including download locations.

Hope this helps,

Richard

-----Original Message-----
From: "Sánchez Sanz, Javier" [mailto:jssanz () indra es]
Sent: 03 September 2003 08:57
To: security-basics () securityfocus com
Subject: Windows environment variables


Hello,
I need to set and remove system or user environment variables at Windows 2000 or XP. But I need to do it by 'hand', I 
mean, with some command, not using the Windows GUI. Does anyone how to do this? If I set variables at the command 
prompt, they only last during the DOS console is open, and what I need is that they are available during the user 
session. I was looking even the registry but I don't found anything. What I found was SetX, a reource kit from 
Microsoft, but it only sets the variables, and I cannot remove them.

Many thanks

Javi


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Attend Black Hat Briefings & Training Federal, September 29-30 (Training),
October 1-2 (Briefings) in Tysons Corner, VA; the world's premier
technical IT security event.  Modeled after the famous Black Hat event in
Las Vegas! 6 tracks, 12 training sessions, top speakers and sponsors.
Symantec is the Diamond sponsor.  Early-bird registration ends September 6.Visit us: www.blackhat.com
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