oldtime@ubuntu:/$ sudo fsck -y /dev/sdd2fsck from util-linux 2.20.1
e2fsck 1.42.5 (29-Jul-2012)
ROOTFS contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Directory inode 267, block #0, offset 0: directory corrupted
Salvage? yes
Missing '.' in directory inode 267.
Fix? yes
Setting filetype for entry '.' in ??? (267) to 2.
Missing '..' in directory inode 267.
Fix? yes
Setting filetype for entry '..' in ??? (267) to 2.
Pass 3: Checking directory connectivity
'..' in /etc/network/if-up.d (267) is <The NULL inode> (0), should be /etc/network (262).
Fix? yes
Pass 4: Checking reference counts
Inode 2 ref count is 23, should be 24. Fix? yes
Inode 262 ref count is 7, should be 6. Fix? yes
Pass 5: Checking group summary information
ROOTFS: ***** FILE SYSTEM WAS MODIFIED *****
ROOTFS: 12204/65536 files (0.1% non-contiguous), 76484/262144 blocks