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1.1 root 1: .TH MOUNT 8 "4 February 1983"
2: .UC 4
3: .SH NAME
4: mount, umount \- mount and dismount file system
5: .SH SYNOPSIS
6: .B /etc/mount
7: [ special name [
8: .B \-r
9: ] ]
10: .PP
11: .B /etc/mount
12: .B \-a
13: .PP
14: .B /etc/umount
15: special
16: .PP
17: .B /etc/umount
18: .B \-a
19: .SH DESCRIPTION
20: .I Mount
21: announces to the system that a removable file system
22: is present on the device
23: .I special.
24: The file
25: .I name
26: must exist already; it
27: must be a directory (unless the root of the
28: mounted file system is not a directory).
29: It becomes the name of the newly mounted root.
30: The optional argument
31: .B \-r
32: indicates that the file system
33: is to be mounted read-only.
34: .PP
35: .I Umount
36: announces to the system that the removable file system previously
37: mounted on device
38: .I special
39: is to be removed.
40: .PP
41: If the
42: .B \-a
43: option is present for either
44: .I mount
45: or
46: .I umount,
47: all of the file systems described in
48: .I /etc/fstab
49: are attempted to be mounted or unmounted.
50: In this case,
51: .I special
52: and
53: .I name
54: are taken from
55: .I /etc/fstab.
56: The
57: .I special
58: file name from
59: .I /etc/fstab
60: is the block special name.
61: .PP
62: These commands
63: maintain a table of mounted devices in
64: .I /etc/mtab.
65: If invoked without an argument,
66: .I mount
67: prints the table.
68: .PP
69: Physically write-protected and magnetic tape file
70: systems must be mounted read-only
71: or errors will occur when access times are updated,
72: whether or not any explicit write is attempted.
73: Setting the write-protected button alone
74: is not sufficient to notify the system of the
75: intent. This may even adversely affect the file system.
76: .SH FILES
77: /etc/mtab mount table
78: .br
79: /etc/fstab file system table
80: .SH "SEE ALSO"
81: mount(2),
82: mtab(5), fstab(5)
83: .SH BUGS
84: Mounting file systems full of garbage will crash the system.
85: .br
86: Mounting a root directory on a non-directory
87: makes some apparently good pathnames invalid.
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