mountpoint

see if a directory or file is a mountpoint

TLDR

Check if a directory is a mountpoint

$ mountpoint [path/to/directory]
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Check if a directory is a mountpoint without showing any output

$ mountpoint -q [path/to/directory]
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Show major/minor numbers of a mountpoint's filesystem

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

mountpoint [-d|-q] directory | file

mountpoint -x device

DESCRIPTION

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

OPTIONS

-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.

EXIT STATUS

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

ENVIRONMENT

LIBMOUNT_DEBUG=all

enables libmount debug output.

NOTES

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

AUTHORS

Karel Zak <kzak@redhat.com>

AVAILABILITY

The mountpoint command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

SEE ALSO

mount(8)

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