56、Drag and drop files onto the terminal window（快速在终端输入文件路径）
drag and drop it onto the terminal window using the mouse. The filename and path will then be autocompleted for you.
(把文件托到终端后松开鼠标，终端会自动显示出文件所在的路径)
62、Find the Ubuntu version and code-name（察看系统版本）
open a terminal window and type cat /etc/lsb-release
(在终端里输入：)
-
cat /etc/lsb-release
