1debugfs create special files 2mke2fs -Fq -b 1024 test.img 512 3Exit status is 0 4debugfs -R ''stat foo'' -w test.img 5Inode: 12 Type: symlink Mode: 0777 Flags: 0x0 6Generation: 0 Version: 0x00000000 7User: 0 Group: 0 Size: 3 8File ACL: 0 9Links: 1 Blockcount: 0 10Fragment: Address: 0 Number: 0 Size: 0 11ctime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 12atime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 13mtime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 14Fast link dest: "bar" 15Exit status is 0 16debugfs -R ''stat foo2'' -w test.img 17Inode: 13 Type: symlink Mode: 0777 Flags: 0x0 18Generation: 0 Version: 0x00000000 19User: 0 Group: 0 Size: 80 20File ACL: 0 21Links: 1 Blockcount: 2 22Fragment: Address: 0 Number: 0 Size: 0 23ctime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 24atime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 25mtime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 26BLOCKS: 27(0):28 28TOTAL: 1 29 30Exit status is 0 31debugfs -R ''block_dump 28'' -w test.img 320000 3132 3334 3536 3738 3930 3132 3334 3536 1234567890123456 330020 3738 3930 3132 3334 3536 3738 3930 3132 7890123456789012 340040 3334 3536 3738 3930 3132 3334 3536 3738 3456789012345678 350060 3930 3132 3334 3536 3738 3930 3132 3334 9012345678901234 360100 3536 3738 3930 3132 3334 3536 3738 3930 5678901234567890 370120 0000 0000 0000 0000 0000 0000 0000 0000 ................ 38* 39 40Exit status is 0 41debugfs -R ''stat pipe'' -w test.img 42Inode: 14 Type: FIFO Mode: 0000 Flags: 0x0 43Generation: 0 Version: 0x00000000 44User: 0 Group: 0 Size: 0 45File ACL: 0 46Links: 1 Blockcount: 0 47Fragment: Address: 0 Number: 0 Size: 0 48ctime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 49atime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 50mtime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 51BLOCKS: 52 53Exit status is 0 54debugfs -R ''stat sda'' -w test.img 55Inode: 15 Type: block special Mode: 0000 Flags: 0x0 56Generation: 0 Version: 0x00000000 57User: 0 Group: 0 Size: 0 58File ACL: 0 59Links: 1 Blockcount: 0 60Fragment: Address: 0 Number: 0 Size: 0 61ctime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 62atime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 63mtime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 64Device major/minor number: 08:00 (hex 08:00) 65Exit status is 0 66debugfs -R ''stat null'' -w test.img 67Inode: 16 Type: character special Mode: 0000 Flags: 0x0 68Generation: 0 Version: 0x00000000 69User: 0 Group: 0 Size: 0 70File ACL: 0 71Links: 1 Blockcount: 0 72Fragment: Address: 0 Number: 0 Size: 0 73ctime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 74atime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 75mtime: 0x50f560e0 -- Tue Jan 15 14:00:00 2013 76Device major/minor number: 01:03 (hex 01:03) 77Exit status is 0 78e2fsck -yf -N test_filesys 79Pass 1: Checking inodes, blocks, and sizes 80Pass 2: Checking directory structure 81Pass 3: Checking directory connectivity 82Pass 4: Checking reference counts 83Pass 5: Checking group summary information 84test_filesys: 16/64 files (0.0% non-contiguous), 29/512 blocks 85Exit status is 0 86