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Total private dirty RSS 54.95 MB Total private dirty RSS 54.95 MB Notice the introduction of current into the DocumentRoot. This tells Apache that it should use the current symbolic link and, thus, treat whatever current points to as the live version of the application. But, what happens when you want to deploy a new version of your application Capistrano is smart enough to rewrite the symbolic link, but it doesn't natively know how to restart the server. Fortunately, as we saw before, a...

The Cambridge Autonomous Underwater Vehicle

Designed and built an autonomous underwater vehicle for an annual Europe-wide competition. The AUVs will be tested by an underwater assault course that must be completed with no communication to or from the surface. Creating autonomous systems is a fascinating topic and has been ever since Isaac Asimov wrote about robotics in the early 1940s. Such a system can navigate unknown terrains, perform tasks and make decisions without assistance from humans. Lawn mowers and vacuum cleaners, able to...

Kyle Rankin

When Disaster Strikes Attack of the rm Command Can the rm -rf command ever be tamed Learn how to pick up the pieces when rm runs rampant on your filesystem. The following is the continuation of a series of columns on Linux disasters and how to recover from them, inspired in part by a Halloween Linux Journal Live episode titled Horror Stories. You can watch the original episode at www.linuxjournal.com Some commands on the command line are so blunt, so potentially devastating, that every time I...