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I am trying to work out how to detect whether a user is running with admin rights under Windows XP. This is fairly easy to do in Vista/Win7 thanks to the whoami command. Here's a snippet in Ruby for how to do it under Vista:
Note, the following link now incorporates the solution suggested by muteW
http://gist.github.com/65931
The trouble is, whoami doesn't come with Windows XP and so the above linked method will always return false on WinXP, even if we're running as an administrator.
So, does anyone know of a way to detect whether we're running as an admin under Windows XP using Ruby, command-line tools, batch-files, or even third-party (needs to be open source, really) tools?
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Select Control Panel. In the Control Panel window, double click on the User Accounts icon. In the lower half of the User Accounts window, under the or pick an account to change heading, find your user account. If the words “Computer administrator” are in your account's description, then you are an administrator.
Open the Control Panel in Large icons view, and then click User Accounts. Click the Manage another account link. You should see all the accounts on your computer. If your account has admin rights, you can see the word “Administrator” under your account name.
This will detect if the user is running in elevated mode (eg a command prompt that was "Run As" Administrator). It relies on the fact that you require admin privileges to read the LOCAL SERVICE account reg key:
reg query "HKU\S-1-5-19"
this will return a non-zero error code if it cannot be read, and zero if it can.
Works from XP up...
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