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−devnoShow the major/minor numbers of the device that is mounted on the given directory.
−q,
−−quietBe quiet - don't print anything.
−x,
−−devnoShow the major/minor numbers of the given blockdevice on standard output.
−V,
−−versionDisplay version information and exit.
−h,
−−helpDisplay help text and exit.