How to Set an Environment Variable

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•     Click the Start button.
•     Right Click on Computer (or My Computer) and select Properties.
•     On the left, click on “Advanced system settings” (Windows XP users can ignore this step).

•     Click the “Advanced” tab.
•    Click on “Environment Variables” button near the bottom.
•     Click “New” and enter a “Variable name:” and “Variable value” and click OK.
•     Click OK and click OK again to get out of System Properties and save your changes.

To use your new variable enter a % character before and after.
For example: testenv would be %testenv%

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