How do I know if Android SDK is installed?

To start the SDK Manager from within Android Studio, use the menu bar: Tools > Android > SDK Manager. This will provide not only the SDK version, but the versions of SDK Build Tools and SDK Platform Tools. It also works if you’ve installed them somewhere other than in Program Files.

Where is Android studio after installation?

To launch Android Studio, open a terminal, navigate to the android-studio/bin/ directory, and execute studio.sh . Select whether you want to import your previous Android Studio settings or not, then click OK.