.\" Copyright (c) 1980 Regents of the University of California.

.\" All rights reserved. The Berkeley software License Agreement

.\" specifies the terms and conditions for redistribution.

.\"

.\" @(#)sync.2 6.2 (Berkeley) 6/30/85

.\"

.TH SYNC 2 "June 30, 1985"

.UC 4

.SH NAME

sync, fsync \- update dirty buffers and super-block

.SH SYNOPSIS

.nf

.ft B

#include <unistd.h>

int sync(void)

int fsync(fd)

.ft R

.fi

.SH DESCRIPTION

.B Sync

causes all information in the file system

buffers that should be on disk to be written out.

This includes modified super blocks,

modified i-nodes, and delayed block I/O.

.B

Fsync

does the same thing, but only for the blocks associated with a specific

file descriptor. Under minix, currently the two calls do the same thing.

.SH "SEE ALSO"

.BR reboot (2),

.BR sync (8).