1 .\" Copyright (c) 2014 The FreeBSD Foundation
3 .\" This software was developed by Edward Tomasz Napierala under sponsorship
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34 .Nd determine filesystem type
44 utility is used to determine the filesystem type on a given device.
45 It can recognize ISO-9660, exFAT, Ext2, FAT, NTFS, and UFS filesystems.
50 also recognizes certain additional metadata formats that cannot be
58 The filesystem name is printed to the standard output
60 .Bl -item -offset indent -compact
85 is built specifically to detect filesystem types, it differs from
88 The output is machine-parsable, filesystem labels are supported,
89 the utility runs sandboxed using
91 and does not try to recognize any file format other than filesystems.
93 These options are available:
94 .Bl -tag -width ".Fl l"
96 In addition to filesystem type, print filesystem label if available.
101 only works on regular files and disk-like device nodes.
102 Trying to read other file types might have unexpected consequences or hang
105 Include filesystems and devices that cannot be mounted directly by
111 utility exits 0 on success, and >0 if an error occurs or the filesystem
112 type is not recognized.
130 utility was developed by
131 .An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
132 under sponsorship from the FreeBSD Foundation.
133 ZFS and GELI support was added by
134 .An Allan Jude Aq Mt allanjude@FreeBSD.org .