The lsblk command in Linux explained
The lsblk command lists disks and partitions as a tree. It is one of the most useful commands for anyone using a live USB drive or a fresh Linux install.
Syntax
lsblk
Examples
lsblk: shows drives such as sda and sdb with sizes and mount points
Tip
Run it before writing to a USB drive to be sure you pick the right device.
Keep learning
New to the terminal? Start with Linux terminal basics. You can try every command safely from a live session: see how to try Linux without installing it. Run man lsblk in a terminal for the full manual.
Frequently asked questions
How do I see every option for lsblk?
Run man lsblk for the full manual, or try lsblk --help for a short summary.
Do I need sudo to run lsblk?
Not for your own files. You only need sudo when the command changes something owned by the system or another user.
Is it safe to practise lsblk on a live USB drive?
Mostly yes, because a live session starts fresh each time. Be careful with commands that write to your internal disk, such as rm on a mounted drive or dd.