Umount Command--linux command application of large dictionary 729 commands interpretation

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Umount Command

use the umount command to unload a file system, such as a specified partition, disc,U -disk, or removable hard disk. umount can uninstall the file system currently mounted in the Linux directory, in addition to specifying the file system directly, you can also use the device name or mount directory to represent the file system.

Command syntax:

umount [ options ] [ devices | Mount Directory ]

The meanings of the options in the command are as shown in the table.

table umount command options meaning

Options	Meaning
-A	Uninstall all file systems recorded in the /etc/mtab
-N	do not store information in the/etc/mtab file when uninstalling
-R	If the uninstallation cannot be successful, try to re-mount the file system in a read-only manner
-F	Forcing the file system to unload
-O < options >	Use the file system option specified in the/etc/fstab file when uninstalling
-T < file system types >	Uninstalls only file systems of the specified type

Example: unmount the disk partition /dev/sda5 file system.

[Email protected] ~]# UMOUNT/DEV/SDA5

Example: Unmount The disk partition file system where the/mnt/www directory resides.

[Email protected] ~]# umount/mnt/www

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Umount Command--linux command application of large dictionary 729 commands interpretation