umount command

Synopsis

umount <mountpoint> | -a

Description

The umount command detaches a mounted filesystem from the VFS namespace.

With -a, unmounts all currently mounted filesystems.

The umount command is also available as fs umount; see fs command.

mountpoint

path of an existing mount point to unmount

Example

=> mount host 0:0 /mnt
=> umount /mnt

Unmount all filesystems:

=> umount -a

Configuration

The umount command is available when CONFIG_CMD_VFS=y.

Return value

The return value $? is set to 0 (true) if the unmount succeeded, 1 (false) otherwise.