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ftruncate
=========

Syntax
------

     #include <unistd.h>
     
     int ftruncate(int file, off_t where);

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

This function truncates FILE at WHERE length.  This only works if the
file is closed right after this call.

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

Zero for success, nonzero for failure.

Example
-------

     int x = open("data", O_WRONLY);
     ftruncate(x, 1000);
     close(x);