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Functions HI-TECH C DUP

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DUP

SYNOPSIS

#include  <unixio.h>

int dup(int fd)


DESCRIPTION

Given a file descriptor, such as returned by open(), this routine will return another file descriptor which will refer to the same open file. -1 is returned if the fd argument is a bad descriptor or does not refer to an open file.

SEE ALSO

open, close, creat, read, write