1.\" $NetBSD: reboot.8,v 1.2 1995/03/18 16:11:52 cgd Exp $ 2.\" 3.\" Copyright (c) 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)reboot.8 8.1 (Berkeley) 6/9/93 35.\" 36.Dd June 9, 1993 37.Dt REBOOT 8 38.Os 39.Sh NAME 40.Nm reboot , 41.Nm halt 42.Nd 43stopping and restarting the system 44.Sh SYNOPSIS 45.Nm halt 46.Op Fl nq 47.Nm reboot 48.Op Fl nq 49.Sh DESCRIPTION 50The 51.Nm halt 52and 53.Nm reboot 54utilities flush the file system cache to disk, send all running processes 55a SIGTERM (and subsequently a SIGKILL) and, respectively, halt or restart 56the system. 57The action is logged, including entering a shutdown record into the login 58accounting file. 59.Pp 60The options are as follows: 61.Bl -tag -width Ds 62.It Fl n 63If the 64.Fl n 65option is specified, 66the file system cache is not flushed. 67This option should probably not be used. 68.It Fl q 69If the 70.Fl q 71option is specified, 72the system is halted or restarted quickly and ungracefully, and only 73the flushing of the file system cache is performed. 74This option should probably not be used. 75.El 76.Pp 77Normally, the 78.Xr shutdown 8 79utility is used when the system needs to be halted or restarted, giving 80users advance warning of their impending doom. 81.Sh SEE ALSO 82.Xr sync 1 , 83.Xr utmp 5 , 84.Xr boot 8 , 85.Xr shutdown 8 86.Sh HISTORY 87A 88.Nm reboot 89command appeared in 90.At v6 . 91