2004-11-03 13:51:07 +00:00
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.\" 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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.\" 2007-12-14 mtk Added Reiserfs, XFS, JFS.
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2007-12-14 13:27:50 +00:00
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.\"
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capget.2, futex.2, sched_setscheduler.2, spu_create.2, spu_run.2, vfork.2, getnameinfo.3, netlink.3, cciss.4, console_codes.4, dsp56k.4, hpsa.4, sk98lin.4, filesystems.5, protocols.5, aio.7, capabilities.7, charsets.7, feature_test_macros.7, futex.7, hier.7, iso_8859-16.7, iso_8859-2.7, koi8-r.7, libc.7, man.7, netlink.7, numa.7, standards.7, unicode.7, units.7, uri.7, x25.7: Global fix: use UR macro where applicable
The syntax .UR http://example.com paired with .UE will create
links which one can interact, if the pager allows that. One
way to see the effect is ask the man(1) command to use browser
display, e.g.:
man -H man7/uri.7
("\:" is optional groff syntax to permit hyphenless line breaks.)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-08-13 08:02:36 +00:00
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.TH FILESYSTEMS 5 2012-08-05 "Linux" "Linux Programmer's Manual"
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2004-11-03 13:51:07 +00:00
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.nh
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.SH NAME
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2010-05-24 12:48:17 +00:00
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filesystems \- Linux file-system types: minix, ext, ext2, ext3, ext4, Reiserfs,
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2007-12-14 08:37:30 +00:00
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XFS, JFS, xia, msdos,
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2010-05-24 12:48:17 +00:00
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umsdos, vfat, ntfs, proc, nfs, iso9660, hpfs, sysv, smb, ncpfs
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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file system is mounted on
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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which file systems your kernel currently supports.
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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In order to use a file system, you have to
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2004-11-03 13:51:07 +00:00
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.I mount
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2007-12-14 08:37:30 +00:00
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it; see
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.BR mount (8).
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2004-11-03 13:51:07 +00:00
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2008-03-19 07:26:08 +00:00
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Below a short description of a few of the available file systems.
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2007-12-14 08:37:30 +00:00
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.TP 10
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2004-11-03 13:51:07 +00:00
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.B "minix"
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2008-03-19 07:26:08 +00:00
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is the file system used in the Minix operating system, the first to run
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2007-04-12 22:42:49 +00:00
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under Linux.
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It has a number of shortcomings: a 64MB partition size
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2008-03-18 09:52:36 +00:00
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limit, short filenames, a single timestamp, etc.
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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file system.
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2007-04-12 22:42:49 +00:00
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It has been completely superseded by the second version
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2008-03-19 07:26:08 +00:00
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of the extended file system
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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is the high performance disk file system used by Linux for fixed disks
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2004-11-03 13:51:07 +00:00
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as well as removable media.
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2008-03-19 07:26:08 +00:00
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The second extended file system was designed as an extension of the
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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the file systems supported under Linux.
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2004-11-03 13:51:07 +00:00
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.TP
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.B ext3
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2008-03-19 07:26:08 +00:00
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is a journaling version of the ext2 file system.
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2007-04-12 22:42:49 +00:00
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It is easy to
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2004-11-03 13:51:07 +00:00
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switch back and forth between ext2 and ext3.
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.TP
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2010-05-24 12:48:17 +00:00
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.B ext4
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is a set of upgrades to ext3 including substantial performance and
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reliability enhancements,
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plus large increases in volume, file, and directory size limits.
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.TP
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2007-12-14 08:37:30 +00:00
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.B Reiserfs
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is a journaling file system, designed by Hans Reiser,
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that was integrated into Linux in kernel 2.4.1.
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.TP
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.B XFS
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is a journaling file system, developed by SGI,
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that was integrated into Linux in kernel 2.4.20.
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.TP
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.B JFS
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is a journaling file system, developed by IBM,
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that was integrated into Linux in kernel 2.4.24.
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.TP
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2004-11-03 13:51:07 +00:00
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.B xiafs
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2008-03-19 07:26:08 +00:00
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was designed and implemented to be a stable, safe file system by
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extending the Minix file system code.
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2007-04-12 22:42:49 +00:00
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It provides the basic most
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2004-11-03 13:51:07 +00:00
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requested features without undue complexity.
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The
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.B xia
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2008-03-19 07:26:08 +00:00
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file system is no longer actively developed or maintained.
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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is the file system used by DOS, Windows, and some OS/2 computers.
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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is an extended DOS file system used by Linux.
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2007-04-12 22:42:49 +00:00
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It adds capability for
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2004-11-03 13:51:07 +00:00
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long filenames, UID/GID, POSIX permissions, and special files
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2008-03-19 07:26:08 +00:00
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(devices, named pipes, etc.) under the DOS file system, without
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2004-11-03 13:51:07 +00:00
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sacrificing compatibility with DOS.
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.TP
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.B vfat
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2008-03-19 07:26:08 +00:00
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is an extended DOS file system used by Microsoft Windows95 and Windows NT.
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VFAT adds the capability to use long filenames under the MSDOS file system.
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2004-11-03 13:51:07 +00:00
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.TP
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2010-05-24 12:48:17 +00:00
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.B ntfs
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replaces Microsoft Window's FAT file systems (VFAT, FAT32).
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It has reliability, performance, and space-utilization enhancements
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plus features like ACLs, journaling, encryption, and so on.
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.TP
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2004-11-03 13:51:07 +00:00
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.B proc
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2008-03-19 07:26:08 +00:00
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is a pseudo file system which is used as an interface to kernel data
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2004-11-03 13:51:07 +00:00
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structures rather than reading and interpreting
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.IR /dev/kmem .
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2007-04-12 22:42:49 +00:00
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In particular, its files do not take disk space.
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See
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2005-10-19 14:48:35 +00:00
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.BR proc (5).
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2004-11-03 13:51:07 +00:00
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.TP
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.B iso9660
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2008-03-19 07:26:08 +00:00
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is a CD-ROM file system type conforming to the ISO 9660 standard.
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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CD-ROM file systems.
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2007-04-12 22:42:49 +00:00
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It is automatically recognized within the
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2004-11-03 13:51:07 +00:00
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.B iso9660
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2008-03-19 07:26:08 +00:00
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file-system support under Linux.
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2004-11-03 13:51:07 +00:00
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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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2007-04-12 22:42:49 +00:00
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by the Rock Ridge Interchange Protocol.
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They are used to further describe the files in the
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2004-11-03 13:51:07 +00:00
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.B iso9660
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intro.1, time.1, accept.2, bind.2, connect.2, execve.2, flock.2, getdents.2, getpriority.2, getuid.2, intro.2, ioctl.2, mincore.2, mknod.2, personality.2, ptrace.2, read.2, recv.2, select_tut.2, send.2, sendfile.2, shmctl.2, sigaction.2, signal.2, stat.2, times.2, truncate.2, umask.2, wait.2, MB_CUR_MAX.3, MB_LEN_MAX.3, argz_add.3, btowc.3, clearenv.3, clock.3, cmsg.3, end.3, endian.3, errno.3, exit.3, fgetwc.3, fgetws.3, fopen.3, fputwc.3, fputws.3, fseek.3, fwide.3, getfsent.3, getgrnam.3, gethostid.3, getipnodebyname.3, getmntent.3, getpwnam.3, getwchar.3, grantpt.3, iconv.3, iconv_close.3, iconv_open.3, insque.3, intro.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, malloc.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mkstemp.3, mktemp.3, nl_langinfo.3, openpty.3, posix_openpt.3, printf.3, ptsname.3, putwchar.3, qecvt.3, rcmd.3, readdir.3, rexec.3, rpc.3, setnetgrent.3, shm_open.3, sigpause.3, stdin.3, stpcpy.3, strftime.3, strptime.3, syslog.3, towctrans.3, towlower.3, towupper.3, ttyslot.3, ungetwc.3, unlocked_stdio.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wprintf.3, console_ioctl.4, pts.4, elf.5, filesystems.5, hosts.5, proc.5, ttytype.5, boot.7, capabilities.7, credentials.7, epoll.7, glob.7, koi8-r.7, path_resolution.7, pty.7, signal.7, suffixes.7, time.7, unicode.7, unix.7, uri.7, utf-8.7: global fix: s/Unix/UNIX/
The man pages were rather inconsistent in the use of "Unix"
versus "UNIX". Let's go with the trademark usage.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2010-10-12 04:45:38 +00:00
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file system to a UNIX host, and provide information such as long
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2007-04-12 22:42:49 +00:00
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filenames, UID/GID, POSIX permissions, and devices.
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It is automatically recognized within the
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2004-11-03 13:51:07 +00:00
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.B iso9660
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2008-03-19 07:26:08 +00:00
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file-system support under Linux.
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2004-11-03 13:51:07 +00:00
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.RE
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.TP
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.B hpfs
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2007-04-12 22:42:49 +00:00
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is the High Performance Filesystem, used in OS/2.
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2008-03-19 07:26:08 +00:00
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This file system is
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2004-11-03 13:51:07 +00:00
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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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2008-03-19 07:26:08 +00:00
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is an implementation of the SystemV/Coherent file system for Linux.
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2007-04-12 22:42:49 +00:00
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It implements all of Xenix FS, SystemV/386 FS, and Coherent FS.
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2004-11-03 13:51:07 +00:00
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.TP
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.B nfs
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2008-03-19 07:26:08 +00:00
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is the network file system used to access disks located on remote computers.
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2004-11-03 13:51:07 +00:00
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.TP
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.B smb
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2008-03-19 07:26:08 +00:00
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is a network file system that supports the SMB protocol, used by
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2004-11-03 13:51:07 +00:00
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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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capget.2, futex.2, sched_setscheduler.2, spu_create.2, spu_run.2, vfork.2, getnameinfo.3, netlink.3, cciss.4, console_codes.4, dsp56k.4, hpsa.4, sk98lin.4, filesystems.5, protocols.5, aio.7, capabilities.7, charsets.7, feature_test_macros.7, futex.7, hier.7, iso_8859-16.7, iso_8859-2.7, koi8-r.7, libc.7, man.7, netlink.7, numa.7, standards.7, unicode.7, units.7, uri.7, x25.7: Global fix: use UR macro where applicable
The syntax .UR http://example.com paired with .UE will create
links which one can interact, if the pager allows that. One
way to see the effect is ask the man(1) command to use browser
display, e.g.:
man -H man7/uri.7
("\:" is optional groff syntax to permit hyphenless line breaks.)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-08-13 08:02:36 +00:00
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.UR ftp://sunsite.unc.edu\:/pub\:/Linux\:/system\:/Filesystems\:/smbfs
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.UE .
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2004-11-03 13:51:07 +00:00
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.TP
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.B ncpfs
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2008-03-19 07:26:08 +00:00
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is a network file system that supports the NCP protocol, used by
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2004-11-03 13:51:07 +00:00
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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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capget.2, futex.2, sched_setscheduler.2, spu_create.2, spu_run.2, vfork.2, getnameinfo.3, netlink.3, cciss.4, console_codes.4, dsp56k.4, hpsa.4, sk98lin.4, filesystems.5, protocols.5, aio.7, capabilities.7, charsets.7, feature_test_macros.7, futex.7, hier.7, iso_8859-16.7, iso_8859-2.7, koi8-r.7, libc.7, man.7, netlink.7, numa.7, standards.7, unicode.7, units.7, uri.7, x25.7: Global fix: use UR macro where applicable
The syntax .UR http://example.com paired with .UE will create
links which one can interact, if the pager allows that. One
way to see the effect is ask the man(1) command to use browser
display, e.g.:
man -H man7/uri.7
("\:" is optional groff syntax to permit hyphenless line breaks.)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2012-08-13 08:02:36 +00:00
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.UR ftp://linux01.gwdg.de\:/pub\:/ncpfs
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.UE .
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2004-11-03 13:51:07 +00:00
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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)
|