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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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