CTRL + w	delete previous word
CTRL + e	jump to end of line
CTRL + a	jump to the beginning of line
CTRL + u	delete entire line before cursor
CTRL + k	delete entire line after cursor
CTRL + y	restore previously deleted word,line,etc.
CTRL + l	clear the screen

http://cnswww.cns.cwru.edu/php/chet/readline/rltop.html