@node dup2
@section @code{dup2}
@findex dup2

POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/dup2.html}

Gnulib module: dup2

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some older platforms.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize