• The up-arrow or control-p moves to the previous command in the history.
• The down-arrow or control-n moves to the next command in the history.
• The left-arrow or control-b moves back along the command line.
• The right-arrow or control-f move forward along the command line.
• control-a moves to the beginning of the command line.
• control-e moves to the end of the command line.
• control-d deletes the character directly under the cursor.
• control-t toggles (swaps) the character under the cursor with the character immediately preceding it.
• control-space marks the current cursor position.
• control-w deletes the text between the mark and the current cursor position, copying the deleted text to the cut buffer.
• control-k kills (deletes) from the cursor to the end of the command line, copying the deleted text to the cut buffer.
• control-y yanks (pastes) the text from the cut buffer, inserting it at the current cursor location.

http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-7.html