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link
====

Syntax
------

     #include <unistd.h>
     
     int link(const char *exists, const char *new);

Description
-----------

Because of limitations of MS-DOS, this function doesn't really link two
files together.  However, it simulates a real `link' by copying the
file at EXISTS to NEW.

Return Value
------------

Zero on success, nonzero on failure.

Example
-------

     link("foo.c", "foo.bak");