For Linux stuff DuckDuckGo is better.
Much better than Yahoo, which some distros provides by default. My Google profile is synced across my computers, and every time I check which search engines are installed (though I don't use them), Yahoo, Ask & AOL will be in there. The Yahoo one comes from Linux Mint, it's their default search engine, and the first thing I change. Many of their results sends one to their cruddy forums, where a question was asked 5 years ago, and one doesn't have the right answer.
DuckDuckGo, while better then Yahoo & Bing, isn't as good as Google, though it's still a decent search engine. It can also be added to Firefox on Windows, while it's mostly LInux users using it, some Windows & Mac users do too.
For privacy, nothing beats ixguick. But this is more for those looking for "https" hits, and other than the fact that one's ISP may know the search engine was used, that's it. One can add ixquick w/out adding "Startpage", which I don't recommend. ixquick can be used on most all OS's.
DuckDuckGo is a good search engine & has lots of potential, if more used it, more hits would be listed for what one wants. That's how search engines works, and that's why Google is #1, though it comes with a price, loss of privacy (what's that on the Internet in 2014 anyway?). Anyway, DuckDuckGo doesn't feed one with a bunch of junk, even if one doesn't find what they're hunting, and with time will improve results.
That's funny you mentioned that site cat, as this is what I used to edit my psensor files. I knew it to be a good resource and it was, love that site!
pcpunk, glad you like it!
Just so happens, as you probably already know, that author has lots of pages on how to set up Linux Mint & Ubuntu (including most all of the "buntus"), for best configuration of one's Linux distro.