freebsd-dev/usr.sbin/fstyp/fstyp.8
Edward Tomasz Napierala 1e2e9c283a Improve wording.
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2015-01-14 11:26:03 +00:00

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.\" Copyright (c) 2014 The FreeBSD Foundation
.\" All rights reserved.
.\"
.\" This software was developed by Edward Tomasz Napierala under sponsorship
.\" from the FreeBSD Foundation.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" $FreeBSD$
.\"
.Dd January 14, 2015
.Dt FSTYP 8
.Os
.Sh NAME
.Nm fstyp
.Nd determine filesystem type
.Sh SYNOPSIS
.Nm
.Op Fl l
.Op Fl s
.Ar special
.Sh DESCRIPTION
The
.Nm
utility is used to determine the filesystem type on a given device.
It can recognize ISO-9660, Ext2, FAT, NTFS, and UFS filesystems.
The filesystem name is printed to the standard output
as, respectively,
.Li cd9660 ,
.Li ext2fs ,
.Li msdosfs ,
.Li ntfs ,
or
.Li ufs .
.Pp
Because
.Nm
is built specifically to detect filesystem types, it differs from
.Xr file 1
in several ways.
The output is machine-parsable, filesystem labels are supported,
the utility runs sandboxed using
.Xr capsicum 4 ,
and does not try to recognize any file format other than filesystems.
.Pp
These options are available:
.Bl -tag -width ".Fl l"
.It Fl l
In addition to filesystem type, print filesystem label if available.
.It Fl s
Ignore file type.
By default,
.Nm
only works on regular files and disk-like device nodes.
Trying to read other file types might have unexpected consequences or hang
indefinitely.
.El
.Sh EXIT STATUS
The
.Nm
utility exits 0 on success, and >0 if an error occurs or the filesystem
type is not recognized.
.Sh SEE ALSO
.Xr file 1 ,
.Xr capsicum 4 ,
.Xr glabel 8 ,
.Xr mount 8
.Sh HISTORY
The
.Nm
command appeared in
.Fx 11.0 .
.Sh AUTHORS
The
.Nm
utility was developed by
.An Edward Tomasz Napierala Aq Mt trasz@FreeBSD.org
under sponsorship from the FreeBSD Foundation.