mountpoint — see if a directory or file is a mountpoint
Examples (TL;DR)
-
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
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.
- -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.
See Also
Availability
The mountpoint command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.