**unblock id**|*type* [...]::
Enable the corresponding device. If the device is hard-blocked, for example via a hardware switch, it will remain unavailable though it is now soft-unblocked.
+**toggle id**|*type* [...]::
+ Enable or disable the the corresponding device.
+
== EXAMPLE
....
rfkill --output ID,TYPE
Suppress "not mounted" error messages.
*-R*, *--recursive*::
- Recursively unmount each specified directory. Recursion for each directory will stop if any unmount operation in the chain fails for any reason. The relationship between mountpoints is determined by _/proc/self/mountinfo_ entries. The filesystem must be specified by mountpoint path; a recursive unmount by device name (or UUID) is unsupported.
+ Recursively unmount each specified directory. Recursion for each directory will stop if any unmount operation in the chain fails for any reason. The relationship between mountpoints is determined by _/proc/self/mountinfo_ entries. The filesystem must be specified by mountpoint path; a recursive unmount by device name (or UUID) is unsupported. Since version 2.37 it umounts also all over-mounted filesystems (more filesystems on the same mountpoint).
*-r*, *--read-only*::
When an unmount fails, try to remount the filesystem read-only.