If you live at the command line as I do, you probably have a number of aliases, functions, and status updates added to your ~/.bash_profile, ~/.bashrc, or similar file. With a little effort you can share the critical components across several computers either automatically (Dropbox or SugarSync) or manually. The key is to abstract away machine-specific references. The following are suggestions for useful additions to your command line lifestyle.
ShieldsUP! from Steve Gibson is a great service that helps you assess your computer’s protection on the Internet. Debugging some recent router troubles, I tried turning on DMZ mode, which redirected all incoming traffic to a Mac (OS X 10.6.6) on my network. I was surprised to see the striped pattern below:
Now that’s weird. Could it be some kind of reactive firewall technique on the Mac? I don’t know, but it’s a pattern, and that certainly caught me off guard.