Linux-Unix cheat sheets - The ultimate collection. Linux Command Line Cheat Sheets.

We all know that when you simply delete a file it's possible to recover it later. Sometimes this is useful, if you accidentally delete something important; but most of the time this is a problem, and you really want that file gone forever. This howto will explain how to delete a file in linux securely and permanently, so it can never be recovered.

One of my resolutions this year is to try to cut down on the carbon I spend on music. Notwithstanding my purchase of the In Rainbows discbox, I’ve amassed an awful number of discs of metallized plastic in barely-recyclable containers. (I say “barely” because K. got me a pencil for Christmas made out of old CD boxes, and a pen from dead car parts. But there’s only so many pencils the world can use.)

Ever wish you had your whole desktop on a flash disk? You know what we mean, you take a spreadsheet up to your 'rents, and you realize that they have no program to actually open your spreadsheet with. Or maybe you hop from computer to computer in several offices, and hate the fact that every computer you work on is just different enough to make it difficult to get things done.

biosdecode is a command line utility to parses the BIOS memory and prints information about all structures (or entry points) it knows of.

With three desktop machines (Kubuntu, Win XP and a testbed, which is currently running ReactOS) and a laptop (Xubuntu) in use at home, our IT is reaching small office proportions, and like many small offices, we run into file sharing problems.

PowerTOP is a Linux tool that finds the software component(s) that make your laptop use more power than necessary while it is idle. As of Linux kernel version 2.6.21, the kernel no longer has a fixed 1000Hz timer tick. This will (in theory) give a huge power savings because the CPU stays in low power mode for longer periods of time during system idle.

Linux is a powerful operating system, but chances are it's a very different operating system than any you've used before. The dizzying number of choices in distributions alone is enough to make your head spin, but it also means there's something out there that really suits your computing style.