mirror of https://github.com/mkerrisk/man-pages
163 lines
5.2 KiB
Groff
163 lines
5.2 KiB
Groff
.\" Copyright 1996 Daniel Quinlan (Daniel.Quinlan@linux.org)
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual; if not, write to the Free
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.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
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.\" USA.
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.\"
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.TH FILESYSTEMS 5 2001-12-07 "" "Linux Programmer's Manual"
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.nh
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.SH NAME
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filesystems \- Linux filesystem types: minix, ext, ext2, ext3, xia, msdos,
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umsdos, vfat, proc, nfs, iso9660, hpfs, sysv, smb, ncpfs
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.SH DESCRIPTION
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When, as is customary, the
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.B proc
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filesystem is mounted on
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.IR /proc ,
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you can find in the file
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.I /proc/filesystems
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which filesystems your kernel currently supports.
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If you need a currently unsupported one, insert the corresponding
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module or recompile the kernel.
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In order to use a filesystem, you have to
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.I mount
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it, see
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.BR mount (8)
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for the mount command, and for the available mount options.
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Below a short description of a few of the available filesystems.
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.TP
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.B "minix"
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is the filesystem used in the Minix operating system, the first to run
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under Linux. It has a number of shortcomings: a 64MB partition size
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limit, short filenames, a single time stamp, etc.
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It remains useful for floppies and RAM disks.
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.TP
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.B ext
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is an elaborate extension of the
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.B minix
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filesystem. It has been completely superseded by the second version
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of the extended filesystem
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.RB ( ext2 )
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and has been removed from the kernel (in 2.1.21).
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.TP
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.B ext2
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is the high performance disk filesystem used by Linux for fixed disks
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as well as removable media.
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The second extended filesystem was designed as an extension of the
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extended file system
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.RB ( ext ).
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.B ext2
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offers the best performance (in terms of speed and CPU usage) of
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the filesystems supported under Linux.
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.TP
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.B ext3
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is a journaling version of the ext2 filesystem. It is easy to
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switch back and forth between ext2 and ext3.
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.TP
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.B xiafs
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was designed and implemented to be a stable, safe filesystem by
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extending the Minix filesystem code. It provides the basic most
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requested features without undue complexity.
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The
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.B xia
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filesystem is no longer actively developed or maintained.
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It was removed from the kernel in 2.1.21.
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.TP
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.B msdos
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is the filesystem used by DOS, Windows, and some OS/2 computers.
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.B msdos
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filenames can be no longer than 8 characters, followed by an
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optional period and 3 character extension.
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.TP
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.B umsdos
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is an extended DOS filesystem used by Linux. It adds capability for
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long filenames, UID/GID, POSIX permissions, and special files
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(devices, named pipes, etc.) under the DOS filesystem, without
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sacrificing compatibility with DOS.
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.TP
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.B vfat
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is an extended DOS filesystem used by Microsoft Windows95 and Windows NT.
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VFAT adds the capability to use long filenames under the MSDOS filesystem.
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.TP
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.B proc
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is a pseudo-filesystem which is used as an interface to kernel data
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structures rather than reading and interpreting
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.IR /dev/kmem .
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In particular, its files do not take disk space. See proc(5).
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.TP
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.B iso9660
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is a CD-ROM filesystem type conforming to the ISO 9660 standard.
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.RS
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.TP
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.B "High Sierra"
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Linux supports High Sierra, the precursor to the ISO 9660 standard for
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CD-ROM filesystems. It is automatically recognized within the
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.B iso9660
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filesystem support under Linux.
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.TP
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.B "Rock Ridge"
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Linux also supports the System Use Sharing Protocol records specified
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by the Rock Ridge Interchange Protocol. They are used to further
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describe the files in the
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.B iso9660
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filesystem to a UNIX host, and provide information such as long
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filenames, UID/GID, POSIX permissions, and devices. It is
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automatically recognized within the
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.B iso9660
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filesystem support under Linux.
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.RE
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.TP
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.B hpfs
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is the High Performance Filesystem, used in OS/2. This filesystem is
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read-only under Linux due to the lack of available documentation.
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.TP
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.B sysv
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is an implementation of the SystemV/Coherent filesystem for Linux. It
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implements all of Xenix FS, SystemV/386 FS, and Coherent FS.
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.TP
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.B nfs
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is the network filesystem used to access disks located on remote computers.
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.TP
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.B smb
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is a network filesystem that supports the SMB protocol, used by
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Windows for Workgroups, Windows NT, and Lan Manager.
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.sp
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To use
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.B smb
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fs, you need a special mount program, which can be found in the ksmbfs
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package, found at
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.IR ftp://sunsite.unc.edu/pub/Linux/system/Filesystems/smbfs .
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.TP
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.B ncpfs
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is a network filesystem that supports the NCP protocol, used by
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Novell NetWare.
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.sp
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To use
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.BR ncpfs ,
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you need special programs, which can be found at
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.IR ftp://linux01.gwdg.de/pub/ncpfs .
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.SH "SEE ALSO"
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.BR proc (5),
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.BR fsck (8),
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.BR mkfs (8),
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.BR mount (8)
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