Ammar's Blog

What is ophcrack? Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms. Features: » Runs on Windows, Linux/Unix, Mac OS X, ... » Cracks LM and NTLM hashes. » Free tables available for Windows XP and Vista/7. » Brute-force module for simple passwords. » Audit mode and CSV export. » Real-time graphs to analyze the passwords. » LiveCD available to simplify the cracking. » Dumps and loads hashes from encrypted SAM recovered from a Windows partition. » Free and open source software (GPL). http://ophcrack.sourceforge.net/  

 fsck (for "file system check" in linux) A system administrator can also run fsck manually if they believe there is a problem with the file system. Because running fsck to repair a file system which is mounted for read/write operations can potentially cause severe data corruption/loss, the file system is normally checked while unmounted, mounted read-only, or with the system in a special maintenance mode that limits the risk of such damage. A journaling file system is designed such that tools such as fsck do not need to be run after unclean shutdown (i.e. crash). The UFS2 Filesystem in FreeBSD has a background fsck, so it is usually not necessary to wait for fsck to finish before accessing the disk. The modern and faster ZFS in FreeBSD, FreeNAS and PC-BSD has no "fsck" repair tool; instead, it has a repair tool called "scrub" which examines and repairs Silent Corruption and other problems. Additionally ZFS uses copy-on-write, intelligent data scrubbin...