lsblk

List information about block devices

TLDR

Show the block devices as a tree

$ lsblk

Show filesystem type, label, UUID and mountpoint

$ lsblk --fs

Print full device paths as a flat list

$ lsblk --paths --list

Choose exactly the columns you want

$ lsblk --output NAME,SIZE,TYPE,FSTYPE,MOUNTPOINTS

Add columns to the default set

$ lsblk --output +SERIAL,MODEL

Show every available column

$ lsblk --output-all

Emit JSON

$ lsblk --json

Emit key=value pairs that a shell can read

$ lsblk --pairs --output NAME,FSTYPE,UUID

Print sizes in exact bytes

$ lsblk --bytes

Show one device without its partitions

$ lsblk --nodeps /dev/sda

Hide the loop devices that snap packages create

$ lsblk --exclude 7

Show owner, group and mode of each device node

$ lsblk --perms

Show queue topology, including sector sizes

$ lsblk --topology

Show which devices support discard (TRIM)

$ lsblk --discard

Show a partition's parents instead of its children

$ lsblk --inverse /dev/sda1

SYNOPSIS

lsblk [-a] [-b] [-f] [-t] [-o columns] [device...]

lsblk lists information about all available or specified block devices. It reads the sysfs filesystem and udev database to gather information and displays it in a tree-like format showing the relationship between devices and partitions.

PARAMETERS

-a, --all

Also list empty devices

-b, --bytes

Print SIZE column in bytes

-f, --fs

Output info about filesystems (FSTYPE, LABEL, UUID, MOUNTPOINT)

-t, --topology

Output block device topology information

-i, --ascii

Use ASCII characters for tree formatting

-l, --list

Produce output in list format

-o, --output columns

Specify which columns to output

-e, --exclude list

Exclude devices by major device numbers

-n, --noheadings

Don't print column headings

-p, --paths

Print full device paths

-d, --nodeps

Don't print holder devices or slaves (show only top-level devices)

-J, --json

Output in JSON format

-S, --scsi

Output SCSI device information

-r, --raw

Use raw output format

AVAILABLE COLUMNS

NAME, KNAME, MAJ:MIN, FSTYPE, MOUNTPOINT, LABEL, UUID, SIZE, MODEL, SERIAL, TYPE, TRAN, RO, RM, HOTPLUG, ROTA

INSTALL

sudo apt install util-linux

sudo dnf install util-linux

sudo pacman -S util-linux

sudo apk add lsblk

sudo zypper install util-linux

brew install util-linux

nix profile install nixpkgs#util-linux

CAVEATS

Some information may require root privileges. Mounted filesystems show mount points; unmounted show blank.

HISTORY

Part of util-linux package. Provides a more readable alternative to /proc/partitions and fdisk -l.