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1.1 root 1: .\" Copyright (c) 1980 Regents of the University of California.
2: .\" All rights reserved. The Berkeley software License Agreement
3: .\" specifies the terms and conditions for redistribution.
4: .\"
5: .\" @(#)mount.8 6.1 (Berkeley) 4/27/85
6: .\"
7: .TH MOUNT 8 "April 27, 1985"
8: .UC 4
9: .SH NAME
10: mount, umount \- mount and dismount file system
11: .SH SYNOPSIS
12: .B /etc/mount
13: [ special name [
14: .B \-r
15: ] ]
16: .PP
17: .B /etc/mount
18: .B \-a
19: .PP
20: .B /etc/umount
21: special
22: .PP
23: .B /etc/umount
24: .B \-a
25: .SH DESCRIPTION
26: .I Mount
27: announces to the system that a removable file system
28: is present on the device
29: .I special.
30: The file
31: .I name
32: must exist already; it
33: must be a directory (unless the root of the
34: mounted file system is not a directory).
35: It becomes the name of the newly mounted root.
36: The optional argument
37: .B \-r
38: indicates that the file system
39: is to be mounted read-only.
40: .PP
41: .I Umount
42: announces to the system that the removable file system previously
43: mounted on device
44: .I special
45: is to be removed.
46: .PP
47: If the
48: .B \-a
49: option is present for either
50: .I mount
51: or
52: .I umount,
53: all of the file systems described in
54: .I /etc/fstab
55: are attempted to be mounted or unmounted.
56: In this case,
57: .I special
58: and
59: .I name
60: are taken from
61: .I /etc/fstab.
62: The
63: .I special
64: file name from
65: .I /etc/fstab
66: is the block special name.
67: .PP
68: These commands
69: maintain a table of mounted devices in
70: .I /etc/mtab.
71: If invoked without an argument,
72: .I mount
73: prints the table.
74: .PP
75: Physically write-protected and magnetic tape file
76: systems must be mounted read-only
77: or errors will occur when access times are updated,
78: whether or not any explicit write is attempted.
79: .SH FILES
80: /etc/mtab mount table
81: .br
82: /etc/fstab file system table
83: .SH "SEE ALSO"
84: mount(2),
85: mtab(5), fstab(5)
86: .SH BUGS
87: Mounting file systems full of garbage will crash the system.
88: .br
89: Mounting a root directory on a non-directory
90: makes some apparently good pathnames invalid.
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