| | 1 | .\"- |
| | 2 | .\" Copyright (c) 1980, 1991, 1993 |
| | 3 | .\" The Regents of the University of California. All rights reserved. |
| | 4 | .\" |
| | 5 | .\" Redistribution and use in source and binary forms, with or without |
| | 6 | .\" modification, are permitted provided that the following conditions |
| | 7 | .\" are met: |
| | 8 | .\" 1. Redistributions of source code must retain the above copyright |
| | 9 | .\" notice, this list of conditions and the following disclaimer. |
| | 10 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| | 11 | .\" notice, this list of conditions and the following disclaimer in the |
| | 12 | .\" documentation and/or other materials provided with the distribution. |
| | 13 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 14 | .\" may be used to endorse or promote products derived from this software |
| | 15 | .\" without specific prior written permission. |
| | 16 | .\" |
| | 17 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 18 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 19 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 20 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 21 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 22 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 23 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 24 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 25 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 26 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 27 | .\" SUCH DAMAGE. |
| | 28 | .\" |
| | 29 | .\" @(#)sync.8 8.1 (Berkeley) 5/31/93 |
| | 30 | .\" $FreeBSD: src/bin/sync/sync.8,v 1.16 2005/01/10 08:39:26 imp Exp $ |
| | 31 | .\" |
| | 32 | .Dd May 31, 1993 |
| | 33 | .Dt SYNC 8 |
| | 34 | .Os |
| | 35 | .Sh NAME |
| | 36 | .Nm sync |
| | 37 | .Nd force completion of pending disk writes (flush cache) |
| | 38 | .Sh SYNOPSIS |
| | 39 | .Nm |
| | 40 | .Sh DESCRIPTION |
| | 41 | The |
| | 42 | .Nm |
| | 43 | utility |
| | 44 | can be called to ensure that all disk writes have been completed before the |
| | 45 | processor is halted in a way not suitably done by |
| | 46 | .Xr shutdown 8 . |
| | 47 | Generally, it is preferable to use |
| | 48 | .Xr shutdown 8 |
| | 49 | to shut down the system, |
| | 50 | as they may perform additional actions |
| | 51 | such as resynchronizing the hardware clock |
| | 52 | and flushing internal caches before performing a final |
| | 53 | .Nm . |
| | 54 | .Pp |
| | 55 | The |
| | 56 | .Nm |
| | 57 | utility utilizes the |
| | 58 | .Xr sync 2 |
| | 59 | function call. |
| | 60 | .Sh SEE ALSO |
| | 61 | .Xr fsync 2 , |
| | 62 | .Xr sync 2 , |
| | 63 | .Xr shutdown 8 |
| | 64 | .Sh HISTORY |
| | 65 | A |
| | 66 | .Nm |
| | 67 | utility appeared in |
| | 68 | .At v4 . |
projects / apple / system_cmds.git / blame_incremental