Unknown option: "-8" Unix manual page for xpcproxy. (host=minya system=Darwin) 
xpcproxy(8)               BSD System Manager's Manual              xpcproxy(8)

NAME
     xpcproxy -- configures the execution environment for XPC services.

DESCRIPTION
     xpcproxy xpcproxy is an exec(3) trampoline that configures the environ-
     ment for an XPC service's execution. This command is not intended to be
     invoked directly.

SEE ALSO
     xpc(3)

Darwin                           21 Aug, 2012                           Darwin