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Setting Machine Level Environment Variables

Cameron Young

Updated July 19, 2016 06:16

Hi All,

Trying understand how to best set two(2) environment variables (machine level - HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment ).

The first is to update(if exists)/add the PROMPT variable to reflect ...
"$_[%COMPUTERNAME% - $D - $T]$_$P$G " (excluding double-quotes).

The second is to add a new environment variable (TAG) for all users to use (same HKLM key as above)

Should I use a Command or Powershell step to perform either or both and how best to perform these actions.

Cheers & thanks in advance,
Cam.

Comments

2 comments

Dan Sadler
July 19, 2016 12:19 (Edited July 19, 2016 12:20)
You could do this with just a CMD step or through Powershell. Either should work but Powershell would give you the greater flexibility for if something exist Prompt this or move on...
```
REG.EXE ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" 

after the " you could add what you need to change. 
```
1

Cameron Young

July 19, 2016 12:57

Thanks for responding Dan.

So for the PROMPT update I'd execute ...

REG.EXE ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PROMPT /d "$_[%COMPUTERNAME% - $D - $T]$_$P$G " /f

Sweet - many thanks.