The ADB utility

Basic use

Make sure you have adb installed on your computer.

To list the available android devices (including virtual machines) you must enter the following command:

adb devices

This command returns the serial number of the connected devices.

If you have multiple devices connected, you can specify with which you want to interact with the parameter '-s'.

adb -s serialNumber command

If you have only one device connected, it is useless to specify its serial number.

The installation of an application using adb is simply done entering:

adb install /path/to/application.apk

To copy a file or folder from the device to the computer, you must use the 'pull' command.

adb pull /path/on/device  /path/on/computer

To copy a file from your computer to your android device, use 'push'.

adb push /path/on/computer /path/on/device

To launch a terminal locally on the android device, use the command 'shell'.

adb shell

A # appears, it is the prompt of your local android terminal. To close the current shell, ctrl-d as in unix.

To learn more, i would say:

adb -help

Otherwise, ask the fucking google...