-A, --noempty
Don’t print empty devices.
-a, --all
Disable all built-in filters and list all empty devices and RAM disk
devices too.
-b, --bytes
Print the sizes in bytes rather than in a human-readable format.
By default, the unit, sizes are expressed in, is byte, and unit
prefixes are in power of 2^10 (1024). Abbreviations of symbols are
exhibited truncated in order to reach a better readability, by
exhibiting alone the first letter of them; examples: "1 KiB" and "1 MiB"
are respectively exhibited as "1 K" and "1 M", then omitting on purpose
the mention "iB", which is part of these abbreviations.
-D, --discard
Print information about the discarding capabilities (TRIM, UNMAP) for
each device.
-d, --nodeps
Do not print holder devices or slaves. For example, lsblk
--nodeps /dev/sda prints information about the sda device
only.
-E, --dedup column
Use column as a de-duplication key to de-duplicate output
tree. If the key is not available for the device, or the device is a
partition and parental whole-disk device provides the same key than the
device is always printed.
The usual use case is to de-duplicate output on system multi-path
devices, for example by -E WWN.
-e, --exclude list
Exclude the devices specified by the comma-separated list of
major device numbers. Note that RAM disks (major=1) are excluded by
default if --all is not specified. The filter is
applied to the top-level devices only. This may be confusing for
--list output format where hierarchy of the devices is
not obvious.
-f, --fs
Output info about filesystems. This option is equivalent to
-o
NAME,FSTYPE,FSVER,LABEL,UUID,FSAVAIL,FSUSE%,MOUNTPOINTS. The
authoritative information about filesystems and raids is provided by the
blkid(8) command.
-I, --include list
Include devices specified by the comma-separated list of
major device numbers. The filter is applied to the top-level devices
only. This may be confusing for --list output format
where hierarchy of the devices is not obvious.
-i, --ascii
Use ASCII characters for tree formatting.
-J, --json
Use JSON output format. It’s strongly recommended to use
--output and also --tree if
necessary.
-l, --list
Produce output in the form of a list. The output does not provide
information about relationships between devices and since version 2.34
every device is printed only once if --pairs or
--raw not specified (the parsable outputs are
maintained in backwardly compatible way).
-M, --merge
Group parents of sub-trees to provide more readable output for RAIDs
and Multi-path devices. The tree-like output is required.
-m, --perms
Output info about device owner, group and mode. This option is
equivalent to -o NAME,SIZE,OWNER,GROUP,MODE.
-N, --nvme
Output info about NVMe devices only.
-v, --virtio
Output info about virtio devices only.
-n, --noheadings
Do not print a header line.
-o, --output list
Specify which output columns to print. Use --help to
get a list of all supported columns. The columns may affect tree-like
output. The default is to use tree for the column NAME (see also
--tree).
The default list of columns may be extended if list is
specified in the format +list (e.g., lsblk -o
+UUID).
-O, --output-all
Output all available columns.
-P, --pairs
Produce output in the form of key="value" pairs. The output lines are
still ordered by dependencies. All potentially unsafe value characters
are hex-escaped (\x<code>). See also option
--shell.
-p, --paths
Print full device paths.
-r, --raw
Produce output in raw format. The output lines are still ordered by
dependencies. All potentially unsafe characters are hex-escaped
(\x<code>) in the NAME, KNAME, LABEL, PARTLABEL and MOUNTPOINT
columns.
-S, --scsi
Output info about SCSI devices only. All partitions, slaves and
holder devices are ignored.
-s, --inverse
Print dependencies in inverse order. If the --list
output is requested then the lines are still ordered by
dependencies.
-T,
--tree[=column]
Force tree-like output format. If column is specified, then
a tree is printed in the column. The default is NAME column.
-t, --topology
Output info about block-device topology. This option is equivalent
to
-o
NAME,ALIGNMENT,MIN-IO,OPT-IO,PHY-SEC,LOG-SEC,ROTA,SCHED,RQ-SIZE,RA,WSAME.
-h, --help
Display help text and exit.
-V, --version
Print version and exit.
-w, --width number
Specifies output width as a number of characters. The default is the
number of the terminal columns, and if not executed on a terminal, then
output width is not restricted at all by default. This option also
forces lsblk to assume that terminal control characters
and unsafe characters are not allowed. The expected use-case is for
example when lsblk is used by the
watch(1) command.
-x, --sort column
Sort output lines by column. This option enables
--list output format by default. It is possible to use
the option --tree to force tree-like output and than
the tree branches are sorted by the column.
-y, --shell
The column name will be modified to contain only characters allowed
for shell variable identifiers, for example, MIN_IO and FSUSE_PCT
instead of MIN-IO and FSUSE%. This is usable, for example, with
--pairs. Note that this feature has been automatically
enabled for --pairs in version 2.37, but due to
compatibility issues, now it’s necessary to request this behavior by
--shell.
-z, --zoned
Print the zone related information for each device.
--sysroot directory
Gather data for a Linux instance other than the instance from which
the lsblk command is issued. The specified directory is
the system root of the Linux instance to be inspected. The real device
nodes in the target directory can be replaced by text files with udev
attributes.