fd_move - renumber a descriptor #include <fd.h> int fd_move(to,from); int to;

int from;

fd_move moves descriptor from to descriptor to . If to was already open, fd_move closes it. If the move is successful, fd_move closes from . Exception: if to and from are the same number, fd_move does nothing. fd_move returns 0 on success, -1 on error. dup(2), fd_copy(3)