Objects of the class FBB::Redirector set up a system level file
redirection, using file descriptors rather than streams. Redirector
objects are effectively wrappers around the dup2(2) system
call. System level redirection allows the programmer to send output to, e.g.,
the standard output stream, which actually appears at another stream (e.g.,
the standard error).
Redirector objects are used to redirect the output sent to a stream
havingdup2(2)oot pears aingdup2
objects a