How can I display the contents of an environment variable from the command prompt in Windows (ok)

https://superuser.com/questions/341192/how-can-i-display-the-contents-of-an-environment-variable-from-the-command-promp

echo %variable%
Ví dụ echo %ANDROID_HOME%
Kết quả: C:\Users\Administrator\AppData\Local\Android\Sdk