projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8f94bfbe KM |
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 | .\" | |
| 889e4453 | 5 | .\" @(#)mount.8 6.1 (Berkeley) %G% |
| 8f94bfbe | 6 | .\" |
| 889e4453 | 7 | .TH MOUNT 8 "" |
| 8f94bfbe KM |
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. |