MOUNTPOINT(1) User Commands MOUNTPOINT(1)

mountpoint - see if a directory or file is a mountpoint

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.

-V, --version

Display version information and exit.

-h, --help

Display help text 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.

Karel Zak <kzak@redhat.com>

mount(8)

For bug reports, use the issue tracker at https://github.com/karelzak/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/.
2021-06-02 util-linux 2.37.2