sync()

Synchronize filesystem updates

Synopsis:

#include <unistd.h>

void sync( void );

Library:

libc

Description:

The sync() function queues all the modified block buffers for writing, and returns; it doesn't wait for the actual I/O to take place. Use this function, or fsync() for a single file, to ensure consistency of the entire on-disk filesystem with the contents of the in-memory buffer cache.

Returns:

-1 on error; any other value on success.

Classification:

Standard Unix

See also:

fdatasync(), fsync()