umount(1M)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | ATTRIBUTES | SEE ALSO

NAME

umount- unmount file systems

SYNOPSIS

umount [-afv] special_device mount_point
umount -a| -A [-fv] [-h host] [-t type]

DESCRIPTION

umount is a target utility.

umount is available in two forms:

• as a C_INIT(1M) built-in command; in that case, the configuration of the ADMIN_MOUNT feature is required

• as a standalone command

umount calls the unmount(2POSIX) system call to remove a remote node (hostaddr:file_system) or special_device from the file system tree at the mount_point.

OPTIONS

umount supports the following options:

-a

Unmounts all file systems listed in fstab(4CC)

-A

Unmounts all the currently mounted file systems except the root.

-f

Forces unmount of the filesystem. Active special devices continue to work, but all other files return errors if further accesses are attempted.

---

Note -

The root file system (/) cannot be forcibly unmounted.

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-h host

Only file systems mounted from the specified host will be unmounted. This option implies the -A option and unless otherwise specified with the -t option, will only unmount NFS file systems.

-t type

Indicates the file system type to which the action applies. For example:

umount -a -t nfs,ufs

-v

Verbose mode. Additional information is displayed as each file system is unmounted.

FILES

/etc/fstab file system table

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving

SEE ALSO

unmount(2POSIX), fstab(4CC), mount(1M)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | ATTRIBUTES | SEE ALSO