How to add/edit environment variables in windows10

Go to Control Panel -> System and Security -> System
Click on Advanced system settings in the left column
It opens System Properties window
Click on Environment Variables button at the bottom

Note:

Path should be the Path of the directory where file resides.

For example, a\b\c\d\foo.exe. If you want foo to be a command on command line. You will have to add the following path to the path system variable : a\b\c\d

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