Manual Reference Pages  - FINDMNT (8)


findmnt - find a filesystem


See Also


findmnt [options]

findmnt [options] device|mountpoint

findmnt [options] [--source] device [--target] mountpoint


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.


-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
  available for umount and move actions
  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.


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.


Karel Zak <>


mount(8), fstab(5)


The findmnt command is part of the util-linux package and is available from

util-linux FINDMNT (8) April 2010
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