man mountpoint (1): see if a directory or file is a mountpoint

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.

AUTHOR

Karel Zak <[email protected]>

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.

AVAILABILITY

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