How to persistently set a variable in Windows 7 from a batch file?

Question

I am trying to set the PATH environment variable in windows 7 using a bat-file; however it does not seem to work.

I am using this windows command:

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Answer 1

Use setx.exe instead of set.

setx PATH "%cd%;%path%;"
pause

Note that this sets the path for all future cmd instances, but not for the current one. If you need that, also run your original set command.

UPDATE: The second parameter needs to be quoted if it contains spaces (which %path% always has). Be warned that if the last character in your %path% is a backslash, it will escape the trailing quote and the last path entry will stop working. I get around that by appending a semicolon before the closing quote.

If you don't want to risk getting ";;;;;;" at the end of your path after repeated runs, then instead strip any trailing backslash from the %path% variable before setting, and it will work correctly.