How to kill all active APPs by ADB shell

Finding active APPs

adb shell dumpsys activity top | grep ACTIVITY

Killing single APP

adb shell am force-stop APP_PACKAGE_NAME

Killing all active APPs

adb shell dumpsys activity top | grep ACTIVITY | awk '{print $2}' | awk -F'/' '{print $1}' | xargs -i adb shell am force-stop {}