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 April 14, 2016 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, Ext2, FAT, NTFS, UFS, and HAMMER 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 62ext2fs 63.It 64msdosfs 65.It 66ntfs 67.It 68ufs 69.It 70hammer 71.El 72.Pp 73Note that HAMMER filesystem consists of more than one volumes requires a path in blkdevs format. 74See 75.Xr hammer 8 76for blkdevs format. 77.Nm 78doesn't recognize partially specified block devices as HAMMER filesystem volumes unless 79.Fl u 80flag is specified. 81.Pp 82Because 83.Nm 84is built specifically to detect filesystem types, it differs from 85.Xr file 1 86in several ways. 87The output is machine-parsable, filesystem labels are supported, 88and does not try to recognize any file format other than filesystems. 89.Pp 90These options are available: 91.Bl -tag -width ".Fl l" 92.It Fl l 93In addition to filesystem type, print filesystem label if available. 94.It Fl s 95Ignore file type. 96By default, 97.Nm 98only works on regular files and disk-like device nodes. 99Trying to read other file types might have unexpected consequences or hang 100indefinitely. 101.It Fl u 102Include filesystems and devices that cannot be mounted directly by 103.Xr mount 8 . 104.El 105.Sh EXIT STATUS 106The 107.Nm 108utility exits 0 on success, and >0 if an error occurs or the filesystem 109type is not recognized. 110.Sh SEE ALSO 111.Xr file 1 , 112.Xr autofs 5 , 113.Xr mount 8 , 114.Xr hammer 8 115.Sh HISTORY 116The 117.Nm 118command appeared in 119.Fx 10.2 . 120The 121.Nm 122command appeared in 123.Dx 4.5 . 124.Sh AUTHORS 125The 126.Nm 127utility was developed by 128.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org 129under sponsorship from the FreeBSD Foundation. 130ZFS and GELI support was added by 131.An Allan Jude Aq Mt allanjude@FreeBSD.org 132.Pp 133The 134.Nm 135utility was ported to 136.Dx 137by 138.An Tomohiro Kusumi Aq Mt kusumi.tomohiro@gmail.com . 139.Sh BUGS 140The 141.Nm 142utility on 143.Dx 144currently doesn't support 145.Xr zfs 8 146pool and 147.Xr geli 8 148providers supported on 149.Fx . 150