-A, --all
Disable all built-in filters and print all filesystems.
-a, --ascii
Use ascii characters for tree formatting.
-b, --bytes
Print the SIZE, USED and AVAIL columns in bytes rather than
in a human-readable format.
-C, --nocanonicalize
Do not canonicalize paths at all. This option affects the
comparing of paths and the evaluation of tags (LABEL, UUID,
etc.).
-c, --canonicalize
Canonicalize all printed paths.
-D, --df
Imitate the output of df(1). This option is equivalent to -o
SOURCE,FSTYPE,SIZE,USED,AVAIL,USE%,TARGET but excludes all
pseudo filesystems. Use --all to print all filesystems.
-d, --direction word
The search direction, either forward or backward.
-e, --evaluate
Convert all tags (LABEL, UUID, PARTUUID or PARTLABEL) to the
corresponding device names.
-F, --tab-file path
Search in an alternative file. If used with --fstab, --mtab
or --kernel, then it overrides the default paths. If
specified more than once, then tree-like output is disabled
(see the --list option).
-f, --first-only
Print the first matching filesystem only.
-h, --help
Display help text and exit.
-i, --invert
Invert the sense of matching.
-J, --json
Use JSON output format.
-k, --kernel
Search in /proc/self/mountinfo. The output is in the
tree-like format. This is the default. The output contains
only mount options maintained by kernel (see also --mtab).
-l, --list
Use the list output format. This output format is
automatically enabled if the output is restricted by the -t,
-O, -S or -T option and the option --submounts is not used or
if more that one source file (the option -F) is specified.
-M, --mountpoint path
Explicitly define the mountpoint file or directory. See also
--target.
-m, --mtab
Search in /etc/mtab. The output is in the list format by
default (see --tree). The output may include user space mount
options.
-N, --task tid
Use alternative namespace /proc/<tid>/mountinfo rather than
the default /proc/self/mountinfo. If the option is specified
more than once, then tree-like output is disabled (see the
--list option). See also the unshare(1) command.
-n, --noheadings
Do not print a header line.
-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 does not have global meaning. The "no" can used for
individual items in the list. The "no" prefix interpretation
can be disabled by "+" prefix.
-o, --output list
Define output columns. See the --help output to get a list of
the currently supported columns. The TARGET column contains
tree formatting if the --list or --raw options are not
specified.
The default list of columns may be extended if list is
specified in the format +list (e.g., findmnt -o
+PROPAGATION).
--output-all
Output almost all available columns. The columns that require
--poll are not included.
-P, --pairs
Produce output in the form of key="value" pairs. All
potentially unsafe value characters are hex-escaped
(\x<code>). The key (variable name) will be modified to
contain only characters allowed for a shell variable
identifiers, for example, FS_OPTIONS and USE_PCT instead of
FS-OPTIONS and USE%.
-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.
The poll mode allows using 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
--pseudo
Print only pseudo filesystems.
--shadow
Print only filesystems over-mounted by another filesystem.
-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.
-r, --raw
Use raw output format. All potentially unsafe characters are
hex-escaped (\x<code>).
--real
Print only real filesystems.
-S, --source spec
Explicitly define the mount source. Supported specifications
are device, maj:_min_, LABEL=label, UUID=uuid,
PARTLABEL=label and PARTUUID=uuid.
-s, --fstab
Search in /etc/fstab. The output is in the list format (see
--list).
-T, --target path
Define the mount target. If path is not a mountpoint file or
directory, then findmnt checks the path elements in reverse
order to get the mountpoint (this feature is supported only
when searching in kernel files and unsupported for --fstab).
It's recommended to use the option --mountpoint when checks
of path elements are unwanted and path is a strictly
specified mountpoint.
-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).
--tree
Enable tree-like output if possible. The options is silently
ignored for tables where is missing child-parent relation
(e.g., fstab).
--shadowed
Print only filesystems over-mounted by another filesystem.
-U, --uniq
Ignore filesystems with duplicate mount targets, thus
effectively skipping over-mounted mount points.
-u, --notruncate
Do not truncate text in columns. The default is to not
truncate the TARGET, SOURCE, UUID, LABEL, PARTUUID, PARTLABEL
columns. This option disables text truncation also in all
other columns.
-v, --nofsroot
Do not print a [/dir] in the SOURCE column for bind mounts or
btrfs subvolumes.
-w, --timeout milliseconds
Specify an upper limit on the time for which --poll will
block, in milliseconds.
-x, --verify
Check mount table content. The default is to verify
/etc/fstab parsability and usability. It's possible to use
this option also with --tab-file. It's possible to specify
source (device) or target (mountpoint) to filter mount table.
The option --verbose forces findmnt to print more details.
--verbose
Force findmnt to print more information (--verify only for
now).
--vfs-all
When used with VFS-OPTIONS column, print all VFS
(fs-independent) flags. This option is designed for auditing
purposes to list also default VFS kernel mount options which
are normally not listed.
