OPTIONS¶
-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.
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 --mountpoint /mnt/foo
Monitors mount, unmount, remount and move on
/mnt/foo.
findmnt --poll=umount --first-only --mountpoint
/mnt/foo
Waits for /mnt/foo unmount.
findmnt --poll=remount -t ext3 -O ro
Monitors remounts to read-only mode on all ext3
filesystems.