mountpoint - Man Page

• Check if a directory is a mountpoint: mountpoint path/to/directory
• Check if a directory is a mountpoint without showing any output: mountpoint -q path/to/directory
• Show major/minor numbers of a mountpoint's filesystem: mountpoint --fs-devno path/to/directory

tldr.sh

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.

Karel Zak

mount(8)

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.

mount(2).