Clean up the line: You can use Ctrl+U to clear up to the beginning.
Clean up the line: Ctrl+A Ctrl+K to wipe the current line in the terminal
Cancel the current command/line: Ctrl+C.
Recall the deleted command: Ctrl+Y
Go at the beginning of the line: Ctrl+A
Go at the end of the line: Ctrl+E
Remove the forward words for example, if you are middle of the command: Ctrl+K
Remove characters on the left, until the beginning of the word: Ctrl+W
To clear your entire command prompt: Ctrl + L
Toggle between the start of line and current cursor position: Ctrl + XX
Source : http://stackoverflow.com/questions/9679776/how-do-i-clear-delete-the-current-line-in-terminal