Adb tool is installed in the computer:
sudo APT install Android-Android-Tools-adb-fastboot Tools
# checks for success
adb version
Open adb Service
sudo adb kill-server sudo adb start-server
The phone side
Phone developers usually hidden by default option; It should be open as follows:
1. find the system set up inside and click at 7 in the above position, open developer options
2. In the Setup menu found inside the developer options, click open
3. Turn on USB Debugging
4. The phone has time to click on the pop consent
Verifying Successful computer end
adb devices
adb shell screencap /sdcard/screen.png
The first command will view the device
The second command executes an adb command to intercept phone screen and stored on the phone, the album can be found on the phone and check time a successful screenshot
Problems can refer to:
https://stackoverflow.com/questions/9210152/set-up-device-for-development-no-permissions
https://askubuntu.com/questions/908306/adb-no-permissions-on-ubuntu-17-04
https://stackoverflow.com/questions/23081263/adb-android-device-unauthorized
ADB usage Reference: