Q

What does "%" mean in a term like %Homepath%?

What does the percent mean in something like %Homepath% or %Homedrive%? And are the words in the middle case s

ensitive?

The percent signs indicate that they are environment variables that are to be expanded. You can see these in action by starting up a Command Prompt (CMD.EXE). Type the SET command and you'll see all the currently defined environment variables for your account.

On the machine I am using right now, HOMEDRIVE and HOMEPATH are the following according to the SET command:
 

HOMEDRIVE=E:
HOMEPATH=Documents and Settingsjohn

To show it using the expanded environment variables, enter the following command in the Command Prompt window:
 

dir "%homedrive%%homepath%"

This is the equivalent of typing on my machine:
 

dir "e:Documents and Settingsjohn"


 

This was first published in December 2002

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