# lsblk > lists information about devices - list all storage devices in a tree-like format. `lsblk` - Also list empty devices. `lsblk −a` - Print the SIZE column in bytes rather than in a human-readable format. `lsblk −b` - Output info about filesystems. `lsblk −f` - Use ASCII characters for tree formatting. `lsblk −i` - Output info about block-device topology. `lsblk −t`