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umount

umount

umount Unmounts file systems.
umount [-fv] <special> | <node>

umount -a [-fv] [-h <host>] [-t ufs | lfs | <external_type>]

-f Forcibly unmounts the file system. Active special devices continue to work, but all other files return errors if further accesses are attempted. The root file system cannot be forcibly unmounted.
-v Enables verbose mode.
-a All the file systems described in fstab (5) are unmounted.
-h <host> Unmounts only file systems mounted from <host>. This options implies the -a option, and unless specified with the -t option, only unmounts NFS file systems.
-t ufs | lfs | <external_type> Unmounts file systems of the specified type. More than one type may be specified in a comma-separated list. The list of file system types can be prefixed by no to specify file system types that should not be unmounted.



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