1.\" Copyright (c) 2014 The FreeBSD Foundation 2.\" All rights reserved. 3.\" 4.\" This software was developed by Edward Tomasz Napierala under sponsorship 5.\" from the FreeBSD Foundation. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $FreeBSD$ 29.\" 30.Dd June 15, 2015 31.Dt FSTYP 8 32.Os 33.Sh NAME 34.Nm fstyp 35.Nd determine filesystem type 36.Sh SYNOPSIS 37.Nm 38.Op Fl l 39.Op Fl s 40.Op Fl u 41.Ar special 42.Sh DESCRIPTION 43The 44.Nm 45utility is used to determine the filesystem type on a given device. 46It can recognize ISO-9660, Ext2, FAT, NTFS, and UFS filesystems. 47When the 48.Fl u 49flag is specified, 50.Nm 51also recognizes certain additional metadata formats that cannot be 52handled using 53.Xr mount 8 , 54such as ZFS pools and 55.Xr geli 8 56providers. 57.Pp 58The filesystem name is printed to the standard output 59as, respectively: 60.Bl -item -offset indent -compact 61.It 62cd9660 63.It 64ext2fs 65.It 66geli 67.It 68msdosfs 69.It 70ntfs 71.It 72ufs 73.It 74zfs 75.El 76.Pp 77Because 78.Nm 79is built specifically to detect filesystem types, it differs from 80.Xr file 1 81in several ways. 82The output is machine-parsable, filesystem labels are supported, 83the utility runs sandboxed using 84.Xr capsicum 4 , 85and does not try to recognize any file format other than filesystems. 86.Pp 87These options are available: 88.Bl -tag -width ".Fl l" 89.It Fl l 90In addition to filesystem type, print filesystem label if available. 91.It Fl s 92Ignore file type. 93By default, 94.Nm 95only works on regular files and disk-like device nodes. 96Trying to read other file types might have unexpected consequences or hang 97indefinitely. 98.It Fl u 99Include filesystems and devices that cannot be mounted directly by 100.Xr mount 8 . 101.El 102.Sh EXIT STATUS 103The 104.Nm 105utility exits 0 on success, and >0 if an error occurs or the filesystem 106type is not recognized. 107.Sh SEE ALSO 108.Xr file 1 , 109.Xr capsicum 4 , 110.Xr autofs 8 , 111.Xr geli 8 , 112.Xr glabel 8 , 113.Xr mount 8 , 114.Xr zpool 8 115.Sh HISTORY 116The 117.Nm 118command appeared in 119.Fx 11.0 . 120.Sh AUTHORS 121The 122.Nm 123utility was developed by 124.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org 125under sponsorship from the FreeBSD Foundation. 126ZFS and GELI support was added by 127.An Allan Jude Aq Mt allanjude@FreeBSD.org 128