How to setup Environment Variables in Linux/Windows

Linux:

Open your .bashrc, located in your /home/"user"/ and add this:

export PATH=${PATH}:~/path/to/your/executeable

Windows:

Start > Control Panel > System and Security > System > Click on "Advanced system settings" > Click on "Environment Variables"

Under user variables, click on "new" and then give your new variable a name such as "PATH" and for the Path, input the absolute directory of the file you wish to run.

For example: ";C:\Windows;C:\Windows\System32;C:\Program Files (x86)\Nmap;C:\Program Files (x86)\Python;C:\"

I have Nmap and Python executable from my Windows Command Prompt.

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