mount(8) [ultrix man page]
mount(8) System Manager's Manual mount(8) Name mount, umount - mount or unmount file systems Syntax /etc/mount [ options ] [ device ] [ directory ] /etc/umount [ options ] [ device ] [ directory ] Description This is a general description of the command. Additional descriptions are provided to define the syntax and options for the NFS and UFS file systems. Each invocation of the command announces to the system that a file system is present on the device device. The file system may be local or remote. File directory must exist as a directory file. It becomes the name of the newly mounted file system root. If invoked without arguments, prints the list of mounted file systems. Physically write-protected disks and magnetic tape file systems must be mounted read-only or an error will occur at mount time. General users can only mount file systems with certain restrictions. For example, the user, other than the superuser, performing the mount must own the directory directory. Furthermore, no users other than the superuser can execute or programs on the mounted file systems. In addition, users other than the superuser cannot access block or special character devices such as on the mounted file systems. The command announces to the system that the removable file system previously mounted on the specified directory is to be removed. Only the person who mounted a particular file system or the superuser can unmount the file system again. Options -a Reads the file and mounts, or unmounts, all file systems listed there. -f Fast unmount. The option has no meaning for local file systems and directories. However, for remote file system types (such as NFS), the option causes the client to unmount the remotely mounted file systems and directories without notifying the server. This can avoid the delay of waiting for acknowledgment from a server that is down. -o options Specifies a string that is passed to the kernel and used by the specific file system's mount routine in the kernel. For spe- cific options, refer to the file system-specific description, such as -r Indicates that the file system is to be mounted read only. To share a disk, each host must mount the file system with the -r option. -t type Specifies the type of file system is being mounted. When used with the option, the option mounts all file systems of the given type found in the file. For specific file system types, refer to the file system-specific description, such as -v Tells what did or did not happen. (Verbose flag) The options for are: -a Unmounts all mounted file systems. It may be necessary to execute twice to accomplish unmounting of all mounted file systems. -v Tells what did or did not happen. (Verbose flag) Restrictions Mounting corrupted file systems will crash the system. Files File systems information table See Also getmnt(2), mount(2), fstab(5), fsck(8), mount(8nfs), mount(8ufs) mount(8)
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mount(1M) mount(1M) NAME
mount, umount - mount and unmount file systems SYNOPSIS
FStype] FStype] specific_options] {special|directory} FStype] specific_options] special directory {special|directory} FStype] host] DESCRIPTION
The command mounts file systems. Only a superuser can mount file systems. Other users can use to list mounted file systems. The command attaches special, a removable file system, to directory, a directory on the file tree. directory, which must already exist, will become the name of the root of the newly mounted file system. special and directory must be given as absolute path names. If either special or directory is omitted, attempts to determine the missing value from an entry in the file. can be invoked on any removable file system, except If is invoked without any arguments, it lists all of the mounted file systems from the file system mount table, The command unmounts mounted file systems. Only a superuser can unmount file systems. Options (mount) The command recognizes the following options: Attempt to mount all file systems described in All optional fields in must be included and supported. If the option is specified, all file systems in with that FStype are mounted. If is specified in an entry's option list, this entry is skipped. File systems are not neces- sarily mounted in the order listed in Verbose mode. Write a message to the standard output indicating which file system is being mounted. Specify FStype, the file system type on which to operate. See fstyp(1M). If this option is not included on the command line, then it is determined from either by matching special with an entry in that file, or from file system statis- tics of special, obtained by (see statfsdev(3C)). Unmount only those file systems listed in that are remote-mounted from host. Limit actions to local file systems only. Specify options specific to each file system type. specific_options is a list of comma separated suboptions and/or keyword/attribute pairs intended for a FStype-spe- cific version of the command. See the FStype-specific manual entries for a description of the specific_options sup- ported, if any. Report the list of mounted file systems in the format. Prevent the display of error messages that result from an attempt to mount already mounted file systems. Mount the specified file system as read-only. Physically write-protected file systems must be mounted in this way or errors occur when access times are updated, whether or not any explicit write is attempted. Report the regular output with file system type and flags; however, the directory and special fields are reversed. Echo the completed command line, but perform no other action. The command line is generated by incorporating the user-specified options and other information derived from This option allows the user to verify the command line. Options (umount) The command recognizes the following options: Attempt to unmount all file systems described in All optional fields in must be included and supported. If FStype is specified, all file systems in with that FStype are unmounted. File systems are not necessarily unmounted in the order listed in Forced unmount. A forced unmount is one which will occur regardless of activity on the file system. Not supported by all file system types. See file system type specific man pages for more information. If the file system type man page does not men- tion forced unmount, then it is not supported for that file system type. Specify FStype, the file system type on which to operate. If this option is not included on the command line, then it is determined from by matching special with an entry in that file. If no match is found, the command fails. Verbose mode. Write a message to standard output indicating which file system is being unmounted. Echo the completed command line, but perform no other action. The command line is generated by incorporating the user-specified options and other information derived from This option allows the user to verify the command line. EXAMPLES
List the file systems currently mounted: Mount the HFS file system at directory Unmount the same file system: WARNINGS
If you receive a message that says "Can't send after socket shutdown", contact your system administrator to make sure the is running prop- erly. AUTHOR
was developed by HP, AT&T, the University of California, Berkeley, and Sun Microsystems. FILES
Static information about the systems Mounted file system table SEE ALSO
fsadm(1M), fstadm(1M), mount_cachefs(1M), mount_cdfs(1M), mount_hfs(1M), mount_lofs(1M), mount_memfs(1M), mount_nfs(1M), mount_vxfs(1M), mount(2), fstab(4), mnttab(4), fs_wrapper(5), quota(5), disk(7). STANDARDS CONFORMANCE
mount(1M)