freebsd man page for yes

YES(1)							    BSD General Commands Manual 						    YES(1)

NAME
     yes -- be repetitively affirmative

SYNOPSIS
     yes [expletive]

DESCRIPTION
     The yes utility outputs expletive, or, by default, ``y'', forever.

SEE ALSO
     jot(1), seq(1)

HISTORY
     The yes command appeared in Version 7 AT&T UNIX.

BSD
								   June 4, 2014 							       BSD