# lsblk > Lists information about devices. > More information: . - 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` - Exclude the devices specified by the comma-separated list of major device numbers: `lsblk -e {{1,7}}` - Display a customized summary using a comma-separated list of columns: `lsblk --output {{NAME}},{{SERIAL}},{{MODEL}},{{TRAN}},{{TYPE}},{{SIZE}},{{FSTYPE}},{{MOUNTPOINT}}`