debian man page for fd_move

fd_move(3)						     Library Functions Manual							fd_move(3)

NAME
       fd_move - renumber a descriptor

SYNTAX
       #include <fd.h>

       int fd_move(to,from);

       int to;
       int from;

DESCRIPTION
       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.

SEE ALSO
       dup(2), fd_copy(3)

																	fd_move(3)