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CentOS 7.0 - man page for mountpoint (centos section 1)

MOUNTPOINT(1)							   User Commands						     MOUNTPOINT(1)

NAME
mountpoint - see if a directory is a mountpoint
SYNOPSIS
mountpoint [-q] [-d] directory mountpoint -x device
DESCRIPTION
mountpoint checks if the directory is mentioned in the /proc/self/mountinfo file.
OPTIONS
-h, --help Print help and exit. -q, --quiet Be quiet - don't print anything. -d, --fs-devno Print major/minor device number of the filesystem on stdout. -x, --devno Print major/minor device number of the blockdevice on stdout.
EXIT STATUS
Zero if the directory is a mountpoint, non-zero if not.
AUTHOR
Karel Zak <kzak@redhat.com>
ENVIRONMENT
LIBMOUNT_DEBUG=0xffff enables 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
mount(8)
AVAILABILITY
The mountpoint command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux June 2011 MOUNTPOINT(1)