@node link, io
@subheading Syntax

@example
#include <unistd.h>

int link(const char *exists, const char *new);
@end example

@subheading Description

Because of limitations of MS-DOS, this function doesn't really link two
files together.  However, it simulates a real @code{link} by copying the
file at @var{exists} to @var{new}. 

@subheading Return Value

Zero on success, nonzero on failure.

@subheading Portability

@portability !ansi, posix

@subheading Example

@example
link("foo.c", "foo.bak");
@end example