"Ext3cow is an open-source, versioning file system based on ext3. It provides a time-shifting interface that allows a real-time and continuous view of the past. This allows users to access their file system as it appeared at any point in time."
"Traffic-vis takes the form of a collector daemon, which sniffs packets off the wire using libpcap. Upon receipt of a signal, the collector will write a report to a file of your choice."
"This tutorial assumes no previous knowledge of scripting or programming, but progresses rapidly toward an intermediate/advanced level of instruction . . . all the while sneaking in little snippets of UNIX® wisdom and lore."
simpy
