Size

• Block size
• PAGE SIZE
• TCP window size
• du -hs --apparent-size

• Table sizes

• ls
  • ls -lhS
  • ls -lR | grep '^-' | sort -rnk5 (sort will not work if ls is used with -h)
  • Including full path: ls -ld $(find ./) | sort -rnk5 | more

-su: /bin/ls: Argument list too long

-d list directories themselves, not their contents

See also

• Block devices, partition, GUID Partition Table (GPT), fdisk, parted, Kpartx, partition, /proc/partitions, blockdev, mkfs, partprobe, diskpart (Windows), fdisk -l /dev/nbd0
• File systems: clustered file system, tune2fs mkfs.ext4,superblock, e2fsck, resize2fs, mount, df, umount, UUID, fstab