Slay is a simple yet very handy shell script that kills all of the processes belonging to a specific user and displays an (optional) “Your current session has been terminated.” to the user being booted. Very useful if you want to harm somebody. [ http://freshmeat.net/projects/slay/ ]

Today I bumped into this interesting perl script password cracker from the guys over at linuxshellaccount.blogspot.com. This works by using perl’s built in crypt function to guess password in an attempt to crack them. A word list is required for this to work. Calling up the script is simple as executing any perl script (./pwdcheck). [...]

Foremost is a console program to recover files based on their headers, footers, and internal data structures. This process is commonly referred to as data carving. Foremost can work on image files, such as those generated by dd, Safeback, Encase, etc, or directly on a drive. The headers and footers can be specified by a [...]

dnstracer determines where a given Domain Name Server (DNS) gets its information from for a given hostname, and follows the chain of DNS servers back to the authoritative answer. For more details about dnstracer and it usage visit this informative page on dnstracer: http://www.mavetju.org/unix/dnstracer.php