1.\" 2.\" Copyright (c) 2003 Networks Associates Technology, Inc. 3.\" All rights reserved. 4.\" 5.\" This software was developed for the FreeBSD Project by Marshall 6.\" Kirk McKusick and Network Associates Laboratories, the Security 7.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR 8.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 9.\" research program. 10.\" 11.\" Redistribution and use in source and binary forms, with or without 12.\" modification, are permitted provided that the following conditions 13.\" are met: 14.\" 1. Redistributions of source code must retain the above copyright 15.\" notice, this list of conditions and the following disclaimer. 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 3. The names of the authors may not be used to endorse or promote 20.\" products derived from this software without specific prior written 21.\" permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" $FreeBSD$ 36.\" 37.Dd January 19, 2003 38.Dt MKSNAP_FFS 8 39.Os 40.Sh NAME 41.Nm mksnap_ffs 42.Nd take a file system snapshot 43.Sh SYNOPSIS 44.Nm 45.Ar mountpoint 46.Ar snapshot_name 47.Sh DESCRIPTION 48The 49.Nm 50utility creates a snapshot named 51.Ar snapshot_name 52on the file system mounted at 53.Ar mountpoint . 54The 55.Ar snapshot_name 56argument must be contained within the file system mounted at 57.Ar mountpoint . 58.Pp 59The group ownership of the file is set to 60.Dq Li operator ; 61the owner of the file remains 62.Dq Li root . 63The mode of the snapshot is set to be readable by the owner 64or members of the 65.Dq Li operator 66group. 67.Sh SEE ALSO 68.Xr chmod 2 , 69.Xr chown 8 , 70.Xr mount 8 71.Sh HISTORY 72The 73.Nm 74utility first appeared in 75.Fx 5.0 . 76