umount(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)

Check Out this Related Man Page

mountall(1M)															      mountall(1M)

NAME

       mountall, umountall - mount and unmount multiple file systems

SYNOPSIS

       FStype] [file_system_table |
       FStype]

DESCRIPTION

       is  used  to  mount  file  systems  according  to  file_system_table.  By default, is the file_system_table.  If a dash is specified, reads
       file_system_table from the standard input; the standard input must be in the same format as the

       Before each file system is mounted, a check is done using (see fsck(1M)) to ensure that the file system is mountable.  If the  file  system
       is not mountable, it is repaired by before the mount is attempted.

       causes all mounted file systems except the non-removable file systems such as to be unmounted.

   Options
       and recognize the following options:

	      Specify the file system type
			     (FStype) to be mounted or unmounted.

	      Specify action on local file systems only.

	      Specify action on remote file systems only.

	      Send a	     signal to processes that have files opened.

	      Attempt to mount all the unmounted file systems. This option will not perform the file system consistency check and repair.

	      Perform the file system consistency check and repair on all unmounted file system. This option will not mount the file systems.

DIAGNOSTICS

       Error and warning messages may originate from or See fsck(1M), mount(1M), or fuser(1M) to interpret the error and warning messages.

EXAMPLES

       Mount all unmounted file systems listed in

       Mount all local file systems listed in

       Mount all remote file systems listed in

       Mount all local hfs file systems:

       Unmount all NFS file systems and kill any processes that have files opened in the file system:

WARNINGS

       especially with the option, should be used with extreme caution, because it can cause severe damage.

       The option may not be available in future releases.

       may not be effective with some cases of LOFS file systems.

FILES

       Static information about the file systems
       Mounted file system table

SEE ALSO

       fsck(1M), mount(1M), fuser(1M), mnttab(4), fstab(4), signal(2)

																      mountall(1M)

Linux and UNIX Man Pages

umount(8) [ultrix man page]

Check Out this Related Man Page