solve 'unauthorized' phone status
$ adb devices
List of devices attached
id unauthorized
$ rm ~/.android/adbkey
1. Disconnect phone from usb cable
2. Revoke USB Debugging on phone
3. Restart the device
4. Reconnect the device
push files
$ adb push <local_pc_files> /storage/emulated/0/Download/
$ adb push ~/Music/main /storage/emulated/0/Music/
$ adb push ~/Music/main/<file> /storage/emulated/0/Music/main/
Pull files
$ adb pull /storage/emulated/0/DCIM/OpenCamera/* ~/Downloads/OpenCamera/
$ adb pull /storage/emulated/0/Download/* ~/Downloads/phone_backup/