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);

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