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mountpoint - see if a directory is a mountpoint
/bin/mountpoint [-q] [-d] /path/to/directory /bin/mountpoint -x /dev/device
Mountpoint checks if the directory is a mountpoint.
-q Be quiet - don't print anything. -d Print major/minor device number of the filesystem on stdout. -x Print major/minor device number of the blockdevice on stdout.
Zero if the directory is a mountpoint, non-zero if not.
Symbolic links are not followed, except when the -x option is used. To force following symlinks, add a trailing slash to the path of the directory. The name of the command is misleading when the -x option is used, but the option is useful for comparing if a directory and a device match up, and there is no other command that can print the info easily.
Miquel van Smoorenburg, firstname.lastname@example.org
stat(1) Mar 15, 2004 MOUNTPOINT(1)