cpverify verifies that a file or directory structure has been copied or burned without errors. That is, it ensures that the copied data is exactly the same as the original. This is done by calculating and comparing a cryptographic checksum using the MD5 message-digest algorithm on each file from the source and the copy destination.
bak2disc is a disc-based backup script aimed at being easy to use and powerful. Its most notable feature is the way it groups common files and directories together to preserve structure when data is divided into discs. This functionality is a tunable threshold that lets you control the balance between data contiguity and maximum disc usage. In addition, bak2disc also features resume support, which allows you to stop burning between discs and continue later. Burning is done on-the-fly, using growisofs for DVDs and cdrecord for CDs.
killppp is a shell script that kills the PPP process after a specified time period of no traffic. This is especially useful for dial-up users who pay per time-unit of being connected. The typical use for it is to start a large download along with killppp and go away. The script will shut down PPP right after the downloading is done, thus saving unnecessary cost of unused network connectivity.
rootpretender is a system that enables special file operations such as the creation of block special and character special device nodes and unlimited chown()ing of files for non-root users of Unix systems. It does this by faking special file operations. For example, chown() is not executed, and mknod() creates regular files instead of device nodes. These operations are remembered, so next time a process under rootpretender's control examines an affected file with stat() or a similar system call, the fake information is returned. It uses LD_PRELOAD and includes patches for rsync 2.6.6 and rsync 2.6.9 for use on systems without LD_PRELOAD support. These make it possible to copy file ownership and device nodes even if root access is not available on the target.