Android

howto setup..

• Install TWRP Manager - this recovery allows ADB connections and you can mount /system/ !
• do a nandroid backup via TWRP recovery
• enable usb debugging and allow debugging from your comuter
• install adt-bundle-linux-x86-.. on PC

adb commands:

adb devices
adb shell
adb pull <remote file>
adb push <local file> <remote file> 

* http://www.androidlegend.com/how-to-use-adb-fastboot-commands-with-your-android-device/