• Convert a PDF to XML - Using pdftohtml it's possible to convert a PDF file to an XML file that includes all location information
• How to extract one page of a PDF as an image -
• How to forward one TCP port to another - How to bounce/forward the TCP connections from one port to another port
• Using tcpflow to see what is being sent on your network - Want to see what is happening on your network without all the overhead of wireshark and a packet sniffer?