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umount

`umount` command is used to unmount mounted file systems.

path

unmount all mounted file systems (-a)

immediately interrupt the unmount operation in progress (-c)

display help information and exit (-h)

do not update /etc/mtab file when unmounting (-n)

mount the file system in read-only mode (-r)

specify the file system type (-t)

do not convert the mount point path to the real path (--no-canonicalize)

unmount the file system in asynchronous mode (--no-sync)

display version information and exit (--version)

Example

umount /mnt

umount -a

umount -t ext4 /mnt

umount -r /mnt