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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.
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.

Zero if the directory or file is a mountpoint, non-zero if not.

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 <>


The mountpoint command is part of the util-linux package and is available from
August 2019 util-linux