Oh yeah, because it stands for list block devices
Oh I didn't notice I didn't include the command (twice!).
It's lsblk without any arguments.
I enjoy the way OpenSuse Tumbleweed set it up:
Laptop:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:1 0 1G 0 part /boot/efi
└─nvme0n1p2 259:2 0 475.9G 0 part
└─cr_nvme-eui.044a5011215f41f7-part2 254:0 0 475.9G 0 crypt
├─system-root 254:1 0 168G 0 lvm /var
│ /usr/local
│ /srv
│ /root
│ /opt
│ /boot/grub2/x86_64-efi
│ /boot/grub2/i386-pc
│ /.snapshots
│ /
├─system-swap 254:2 0 2G 0 lvm [SWAP]
└─system-home 254:3 0 305.9G 0 lvm /home
$ sudo fdisk -l
Disk /dev/nvme0n1: 476.94 GiB, 512110190592 bytes, 1000215216 sectors
Disk model: UMIS RPIRJ512VME2OWD
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 2099199 2097152 1G EFI System
/dev/nvme0n1p2 2099200 1000215182 998115983 475.9G Linux LVM
Desktop:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
nvme0n1 259:0 0 931.5G 0 disk
├─nvme0n1p1 259:1 0 512M 0 part /boot/efi
└─nvme0n1p2 259:2 0 931G 0 part
└─cr-auto-1 254:1 0 931G 0 crypt
├─system-root 254:2 0 610G 0 lvm /var
│ /usr/local
│ /root
│ /srv
│ /opt
│ /boot/grub2/x86_64-efi
│ /boot/grub2/i386-pc
│ /.snapshots
│ /
├─system-swap 254:3 0 62.5G 0 lvm [SWAP]
└─system-home 254:4 0 1.2T 0 lvm /home
nvme1n1 259:3 0 931.5G 0 disk
└─nvme1n1p1 259:4 0 931.5G 0 part
└─cr-auto-2 254:0 0 931.5G 0 crypt
└─system-home 254:4 0 1.2T 0 lvm /home
$ sudo fdisk -l /dev/nvme?n1
Disk /dev/nvme0n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WD_BLACK SN850X 1000GB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 1050623 1048576 512M EFI System
/dev/nvme0n1p2 1050624 1953525134 1952474511 931G Linux LVM
Disk /dev/nvme1n1: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: WD_BLACK SN850X 1000GB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Device Start End Sectors Size Type
/dev/nvme1n1p1 2048 1953525134 1953523087 931.5G Linux LVM