Re:Zsh is your friend.
by ohgodthecat on Tuesday January 31, 2012 @12:28PM
(#3534207)
I believe in bash and zsh the default is ^R and ^S
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except a huge number of terminal emulators still reserve ^S/^Q for XON/XOFF software flow-control[1].
stty -ixon
lives in my init scripts for that reason.