Adding/Removing Environment Variables Through Bat FIle

[kmsaginian]

Hello there. I have added some environment variables to my system by writing this txt file, then executing it as a bat file. Was wondering how I could rewrite the same txt file to remove those environment variables.

Best regards,

Txt file contents:

@echo off
setx UGII_ENV_FILE “C:\Users\Kevin.Saginian\Desktop\Kevin”

setx UGII_SDI_BPS_JOBS_DIR C:\Temp
setx UGII_SDI_OVERRIDE_HOME C:\Temp
setx UGII_SDI_OUTPUT_DIR C:\Temp

[Bruce]

SETX differs from SET in that it is meant to permanently set variables.
like the SET command, SETX var “” will clear it but it remains in the Registry.

you can delete SETX created variables via Control Panel > System > Advanced tab > Environment Variable button.

if you wanted to do that from a .BAT file, you would use - reg delete hkcu\environment /f /v {your variable} if you set it as a User variable.

[Bruce]

@kmsaginian - still need help?

[kmsaginian]

Thank you! How about if I set it as a system variable?

Clearing the user variable worked with:
REG delete “HKCU\Environment” /F /V “UGII_ENV_FILE”

But I’m trying to clear the system variable with:
REG delete “HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment” /F /V “UGII_ENV_FILE”
and it is not working, telling me “ERROR: Access is Denied”

[kmsaginian]

Also tried changing the user from myself to windows at the start of the command prompt by typing:
cd C:\WINDOWS\system32

[Bruce]

access denied is usually when you haven’t started the .BAT script with admin privileges.

[kmsaginian]

Are there any syntax differences between trying to execute the REG delete through a batch file vs directly through the command prompt?

Thank you for your continued input.

[Bruce]

nope, same syntax.
batch files are just a bunch of commands that have been batched up into one script.

[kmsaginian]

Thank you. One other thing I am encountering is this: When I execute the bat file to add, the command prompt shows up and states the variables have been added. When I execute the bat to remove (as an admin), the command prompt flashes for a second and no changes have been made. Any ideas what’s going wrong there?

Again thank you lol I shouldn’t have any more questions after this

[kmsaginian]

Removes just fine when I enter it into the Administrative Command Prompt, just not when I try to run it through the bat.

[Malnutrition]

https://www.sordum.org/9416/powerrun-v1-6-run-with-highest-privileges/

[Bruce]

I have this at the top of .BAT files I need to run with admin rights.

@echo off
net session >nul 2>&1
if not %errorlevel%==0 (
echo CreateObject^(“Shell.Application”^).ShellExecute “%~d0%~p0%~n0.bat”, “”, “”, “runas”, 1 > “%temp%\temp.vbs”
cscript //nologo “%temp%\temp.vbs”
exit /b
)

see if that helps.

[Bruce]

@kmsaginian - still need help?

[phillpower2]

Being that the OP has revisited the forum but chose not to reply this thread will be closed.

[Bruce]

thread re-opened as per OP request.