1.\" Copyright (c) 2016 The DragonFly Project 2.\" Copyright (c) 2014 The FreeBSD Foundation 3.\" All rights reserved. 4.\" 5.\" This software was developed by Edward Tomasz Napierala under sponsorship 6.\" from the FreeBSD Foundation. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 17.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.\" $FreeBSD$ 30.\" 31.Dd February 12, 2018 32.Dt FSTYP 8 33.Os 34.Sh NAME 35.Nm fstyp 36.Nd determine filesystem type 37.Sh SYNOPSIS 38.Nm 39.Op Fl l 40.Op Fl s 41.Op Fl u 42.Ar special 43.Sh DESCRIPTION 44The 45.Nm 46utility is used to determine the filesystem type on a given device. 47It can recognize ISO-9660, exFAT, Ext2, FAT, NTFS, UFS, HAMMER, and HAMMER2 filesystems. 48When the 49.Fl u 50flag is specified, 51.Nm 52also recognizes certain additional metadata formats that cannot be 53handled using 54.Xr mount 8 . 55.Pp 56The filesystem name is printed to the standard output 57as, respectively: 58.Bl -item -offset indent -compact 59.It 60cd9660 61.It 62exfat 63.It 64ext2fs 65.It 66msdosfs 67.It 68ntfs 69.It 70ufs 71.It 72hammer 73.It 74hammer2 75.El 76.Pp 77Note that HAMMER filesystem consists of more than one volumes requires a path in blkdevs format. 78See 79.Xr hammer 8 80for blkdevs format. 81.Nm 82doesn't recognize partially specified block devices as HAMMER filesystem volumes unless 83.Fl u 84flag is specified. 85.Pp 86Because 87.Nm 88is built specifically to detect filesystem types, it differs from 89.Xr file 1 90in several ways. 91The output is machine-parsable, filesystem labels are supported, 92and does not try to recognize any file format other than filesystems. 93.Pp 94These options are available: 95.Bl -tag -width ".Fl l" 96.It Fl l 97In addition to filesystem type, print filesystem label if available. 98.It Fl s 99Ignore file type. 100By default, 101.Nm 102only works on regular files and disk-like device nodes. 103Trying to read other file types might have unexpected consequences or hang 104indefinitely. 105.It Fl u 106Include filesystems and devices that cannot be mounted directly by 107.Xr mount 8 . 108.El 109.Sh EXIT STATUS 110The 111.Nm 112utility exits 0 on success, and >0 if an error occurs or the filesystem 113type is not recognized. 114.Sh SEE ALSO 115.Xr file 1 , 116.Xr autofs 5 , 117.Xr hammer 8 , 118.Xr hammer2 8 , 119.Xr mount 8 120.Sh HISTORY 121The 122.Nm 123command appeared in 124.Fx 10.2 . 125The 126.Nm 127command appeared in 128.Dx 4.5 . 129.Sh AUTHORS 130.An -nosplit 131The 132.Nm 133utility was developed by 134.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org 135under sponsorship from the FreeBSD Foundation. 136ZFS and GELI support was added by 137.An Allan Jude Aq Mt allanjude@FreeBSD.org . 138.Pp 139The 140.Nm 141utility was ported to 142.Dx 143by 144.An Tomohiro Kusumi Aq Mt tkusumi@netbsd.org . 145Donated to DragonFlyBSD by PeerCorps Trust Fund. 146.Sh BUGS 147The 148.Nm 149utility on 150.Dx 151currently doesn't support 152.Xr zfs 8 153pool and 154.Xr geli 8 155providers supported on 156.Fx . 157