mountpoint

Check if a directory is a mountpoint

$ mountpoint [path/to/directory]

$ mountpoint -q [path/to/directory]

$ mountpoint --fs-devno [path/to/directory]

mountpoint [-d|-q] directory|file

mountpoint -x device

mountpoint checks whether the given directory or file is mentioned in the /proc/self/mountinfo file.

-d, --fs-devno

Show the major/minor numbers of the device that is mounted on the given directory.

-q, --quiet

Be quiet - don’t print anything.

--nofollow

Do not follow symbolic link if it the last element of the directory path.

-x, --devno

Show the major/minor numbers of the given blockdevice on standard output.

-h, --help

Display help text and exit.

-V, --version

Print version and exit.

mountpoint has the following exit status values:

0

success; the directory is a mountpoint, or device is block device on --devno

1

failure; incorrect invocation, permissions or system error

32

failure; the directory is not a mountpoint, or device is not a block device on --devno

LIBMOUNT_DEBUG=all

enables libmount debug output.

The util-linux mountpoint implementation was written from scratch for libmount. The original version for sysvinit suite was written by Miquel van Smoorenburg.

For bug reports, use the issue tracker at <https://github.com/util-linux/util-linux/issues>.

The mountpoint command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>.

mount(8)