diff options
Diffstat (limited to 'mount/umount.8')
-rw-r--r-- | mount/umount.8 | 109 |
1 files changed, 108 insertions, 1 deletions
diff --git a/mount/umount.8 b/mount/umount.8 index 85425b487..196bd7f8a 100644 --- a/mount/umount.8 +++ b/mount/umount.8 @@ -1 +1,108 @@ -.so man8/mount.8 +.\" Copyright (c) 1996 Andries Brouwer +.\" This page is somewhat derived from a page that was +.\" (c) 1980, 1989, 1991 The Regents of the University of California +.\" and had been heavily modified by Rik Faith and myself. +.\" +.\" This is free documentation; you can redistribute it and/or +.\" modify it under the terms of the GNU General Public License as +.\" published by the Free Software Foundation; either version 2 of +.\" the License, or (at your option) any later version. +.\" +.\" The GNU General Public License's references to "object code" +.\" and "executables" are to be interpreted as the output of any +.\" document formatting or typesetting system, including +.\" intermediate and printed output. +.\" +.\" This manual is distributed in the hope that it will be useful, +.\" but WITHOUT ANY WARRANTY; without even the implied warranty of +.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +.\" GNU General Public License for more details. +.\" +.\" You should have received a copy of the GNU General Public +.\" License along with this manual; if not, write to the Free +.\" Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, +.\" USA. +.\" +.TH UMOUNT 8 "26 July 1997" "Linux 2.0" "Linux Programmer's Manual" +.SH NAME +umount \- unmount file systems +.SH SYNOPSIS +.BI "umount [\-hV]" +.LP +.BI "umount -a [\-nrv] [\-t " vfstype ] +.br +.BI "umount [\-nrv] " "device " | " dir " [...] +.SH DESCRIPTION +The +.B umount +command detaches the file system(s) mentioned from the file hierarchy. +A file system is specified either by giving the directory where it +has been mounted, or by giving the special device on which it lives. + +Note that a file system cannot be unmounted when it is `busy' - +for example, when there are open files on it, or when some process +has its working directory there, or when a swap file on it is in use. +The offending process could even be +.B umount +itself - it opens libc, and libc in its turn may open for example +locale files. + +Options for the +.B umount +command: +.TP +.B \-V +Print version and exit. +.TP +.B \-h +Print help message and exit. +.TP +.B \-v +Verbose mode. +.TP +.B \-n +Unmount without writing in +.IR /etc/mtab . +.TP +.B \-r +In case unmounting fails, try to remount read-only. +.TP +.B \-a +All of the file systems described in +.I /etc/mtab +are unmounted. (With +.B umount +version 2.7 and later: the +.I proc +filesystem is not unmounted.) +.TP +.BI \-t " vfstype" +Indicate that the actions should only be taken on file systems of the +specified type. More than one type may be specified in a comma separated +list. The list of file system types can be prefixed with +.B no +to specify the file system types on which no action should be taken. + +.SH "THE LOOP DEVICE" +The +.B umount +command will free the loop device (if any) associated +with the mount, in case it finds the option `loop=...' in +.IR /etc/mtab . +Any pending loop devices can be freed using `losetup -d', see +.BR losetup (8). + + +.SH FILES +.I /etc/mtab +table of mounted file systems + +.SH "SEE ALSO" +.BR umount (2), +.BR mount (8), +.BR losetup (8). + +.SH HISTORY +A +.B umount +command appeared in Version 6 AT&T UNIX. |