Install Terminal Emulator for Android

Start an app from terminal:

• am start -a android.intent.action.MAIN -n <package_name>/<full_class_name>
• am start -a android.intent.action.MAIN -n com.android.settings/.TetherSettings &

To get class names of unknown apps, open the AndroidManifest.xml file located in .apk file and try to find the related data.

• am start -a android.intent.action.MAIN -n com.mbirgin.firststeptospeak/com.mbirgin.talk.MainActivity
• am start -a android.intent.action.MAIN -n org.galexander.sshd/.SimpleSSHD

Source: https://android.stackexchange.com/questions/30098/how-to-run-a-specific-apps-action-via-terminal

Connect to Android x86 VirtualBox Guest via adb from Ubuntu 20.04 Host

Firstly from the Network settings, Network adapter attached to Bridged Adapter.

After that from the host Ubuntu terminal I run the following command.

• adb connect AndroidIP
• adb connect 192.168.1.35 #for me

To disconnect:

adb disconnect

To see attached devices

adb devices

To enter adb shell

adb shell

To enter to root mode:

su

Send file / folder to Android device

adb push myfolder /storage/on/device

Copy file / folder from Android device

adb pull /storage/on/device /home/̩user/test