mountpoint

Test if a directory is a filesystem mountpoint. More information: https://manned.org/mountpoint.

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}}