Shortcut — Action

• CTRL + A — Move to the beginning of the line
• CTRL + E — Move to the end of the line
• CTRL + [left arrow] — Move one word backward (on some systems this is ALT + B)
• CTRL + [right arrow] — Move one word forward (on some systems this is ALT + F)
• CTRL + U — (bash) Clear the characters on the line before the current cursor position
• CTRL + U —(zsh) If you're using the zsh, this will clear the entire line
• CTRL + K — Clear the characters on the line after the current cursor position
• ESC + [backspace] — Delete the word in front of the cursor
• CTRL + W — Delete the word in front of the cursor
• ALT + D — Delete the word after the cursor
• CTRL + R — Search history
• CTRL + G — Escape from search mode
• CTRL + - — Undo the last change
• CTRL + L — Clear screen
• CTRL + S — Stop output to screen
• CTRL + Q — Re-enable screen output
• CTRL + C — Terminate/kill current foreground process
• CTRL + Z — Suspend/stop current foreground process
• !! — Execute last command in history
• !abc — Execute last command in history beginning with abc
• !abc:p — Print last command in history beginning with abc

Source: http://www.geekmind.net/2011/01/shortcuts-to-improve-your-bash-zsh.html