FINDMNT(8) System Administration FINDMNT(8)
NAME
findmnt - find a filesystem
SYNOPSIS
findmnt [options]
findmnt [options] device|mountpoint
findmnt [options] [--source] device [--target] mountpoint
DESCRIPTION
findmnt will list all mounted filesytems or search for a filesystem. The findmnt command is able to search in /etc/fstab, /etc/fstab.d,
/etc/mtab or /proc/self/mountinfo. If device or mountpoint is not given, all filesystems are shown.
The command prints all mounted filesystems in the tree-like format by default.
OPTIONS
-h, --help
Print help and exit.
-s, --fstab
Search in /etc/fstab and /etc/fstab.d. The output is in the list format (see --list).
-m, --mtab
Search in /etc/mtab. The output is in the list format (see --list).
-k, --kernel
Search in /proc/self/mountinfo. The output is in the tree-like format. This is the default.
-c, --canonicalize
Canonicalize all printed paths.
-d, --direction word
The search direction - forward or backward.
-e, --evaluate
Convert all tags (LABEL or UUID) to the device names.
-f, --first-only
Print the first matching filesystem only.
-i, --invert
Invert the sense of matching.
-l, --list
Use the list output format. This output format is automatically enabled if the output is restricted by -t, -O, -S or -T option and
the option --submounts is not used.
-v, --nofsroot
Do not print a [/dir] in the SOURCE column for bind-mounts or btrfs subvolumes.
-n, --noheadings
Do not print a header line.
-u, --notruncate
Do not truncate text in columns. The default is to not truncate the TARGET, SOURCE, UUID and LABEL columns. This option disables
text truncation also in all other columns.
-O, --options list
Limit the set of printed filesystems. More than one option may be specified in a comma-separated list. The -t and -O options are
cumulative in effect. It is different from -t in that each option is matched exactly; a leading no at the beginning of one option
does not negate the rest. For more details see mount(8).
-o, --output list
Define output columns. Currently supported are ACTION, SOURCE, TARGET, OLD-TARGET, FSTYPE, OPTIONS, OLD-OPTIONS, VFS-OPTIONS, FS-
OPTIONS, LABEL and UUID. The TARGET column contains tree formatting if the --list or --raw options are not specified.
-p, --poll[=list]
Monitor changes in the /proc/self/mountinfo file. Supported actions are: mount, umount, remount and move. More than one action may
be specified in a comma-separated list. All actions are monitored by default.
The time for which --poll will block can be restricted with the --timeout or --first-only options.
The standard columns always use the new version of the information from the mountinfo file, except the umount action which is based
on the original information cached by findmnt(8). The poll mode allows to use extra columns:
ACTION mount, umount, move or remount action name; this column is enabled by default
OLD-TARGET
available for umount and move actions
OLD-OPTIONS
available for umount and remount actions
-r, --raw
Use raw output format.
-a, --ascii
Use ascii characters for tree formatting.
-t, --types list
Limit the set of printed filesystems. More than one type may be specified in a comma-separated list. The list of filesystem types
can be prefixed with no to specify the filesystem types on which no action should be taken. For more details see mount(8).
-R, --submounts
Print recursively all submounts for the selected filesystems. The restrictions defined by options -t, -O, -S, -T and --direction
are not applied to submounts. All submounts are always printed in tree-like order. The option enables the tree-like output format
by default. This option has no effect for --mtab or --fstab.
-S, --source spec
Explicitly define the mount source. Supported are device, LABEL= and UUID=.
-T, --target dir
Explicitly define the mount target (mountpoint directory).
-w, --timeout milliseconds
Specify an upper limit on the time for which --poll will block, in milliseconds.
EXAMPLES
findmnt --fstab -t nfs
Prints all nfs filesystems defined in /etc/fstab.
findmnt --fstab /mnt/foo
Prints all /etc/fstab filesystems where the mountpoint directory is /mnt/foo. It also prints bind mounts where /mnt/foo is a
source.
findmnt --fstab --target /mnt/foo
Prints all /etc/fstab filesystems where the mountpoint directory is /mnt/foo.
findmnt --fstab --evaluate
Prints all /etc/fstab filesystems and converts LABEL= and UUID= tags to the real device names.
findmnt -n --raw --evaluate --output=target LABEL=/boot
Prints only the mountpoint where the filesystem with label "/boot" is mounted.
findmnt --poll --target /mnt/foo
Monitors mount, umount, remount and move on /mnt/foo.
findmnt --poll=umount --first-only --target /mnt/foo
Waits for /mnt/foo umount.
findmnt --poll=remount -t ext3 -O ro
Monitors remounts to read-only mode on all ext3 filesystems.
AUTHORS
Karel Zak <kzak@redhat.com>
SEE ALSO
mount(8), fstab(5)
AVAILABILITY
The findmnt command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux April 2010 FINDMNT(8)