1.\" Copyright (c) 2000 Paul Saab <ps@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD: src/usr.bin/fsync/fsync.1,v 1.2.2.4 2001/08/01 12:01:27 sheldonh Exp $ 26.\" $DragonFly: src/usr.bin/fsync/fsync.1,v 1.2 2003/06/17 04:29:26 dillon Exp $ 27.\" 28.Dd June 15, 2000 29.Dt FSYNC 1 30.Os 31.Sh NAME 32.Nm fsync 33.Nd synchronize a file's in-core state with that on disk 34.Sh SYNOPSIS 35.Nm 36.Ar 37.Sh DESCRIPTION 38The 39.Nm 40utility causes all the modified data and meta-data of 41all the files named on the command line 42to be written to a permanent storage device. 43.Pp 44The 45.Nm 46utility uses the 47.Xr fsync 2 48function call. 49.Sh SEE ALSO 50.Xr fsync 2 , 51.Xr sync 2 , 52.Xr syncer 4 , 53.Xr halt 8 , 54.Xr reboot 8 55.Sh HISTORY 56The 57.Nm 58command first appeared in 59.Fx 4.3 . 60