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 a mountpoint. On kernels that support the statmount(2) system call (Linux 6.8 and newer), it uses that interface. On older kernels, it falls back to reading /proc/self/mountinfo.

-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.

--show

Print the mountpoint path for the given path. This resolves the given directory or file to its actual mountpoint, which is useful with bind mounts, symlinks, or paths within filesystems. This option requires kernel support for the statmount(2) system call (Linux 6.8 and newer). On older kernels, this option will fail with an error message.

-h, --help

Display help text and exit.

-V, --version

Display 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.

Karel Zak <kzak@redhat.com>

mount(8)

For bug reports, use the issue tracker 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/.

2026-06-16 util-linux 2.42.2