As many of you interested in 3D may have noticed, a number of the big companies (ILM, Weta, Blue Sky, etc.) would love for you to have some experience with Linux/Unix. It isn't usually a deal breaker if you're good at what you do, but it doesn't hurt to be able to claim it on the resume.
The problem is, how do you get experience with it when you don't have the desire or technitude (geekfortidness?) to install it on a partition of your home computer, you don't own/want a Mac with OSX or your school doesn't use Linux?
In my searches for MythTV advice, I came across a distribution of Linux that can be run off the CD and doesn't require you partition your drive or anything risky like that. You just need a computer that can boot from a CD and it will run the whole OS off the CD as well as a number of programs like Open Office (a free MS Office equivalent) and Gimp (an image editor similar to a stripped down Photoshop). I just tried it last night and it worked and didn't mess up my computer.
They have a bit torrent for download, too. And it's free. Download the gnoppix-1.0 disk image for your machine type and burn it to a disk (ie. i386 for Pentium based machines). I'm actually not sure if they have disk images for other machine types. I imagine they do, but it may take some searching.
There are some flaws in this as far as I can tell (I'll update if I find I was wrong). One being, unless you have a partition on the drive to save stuff, you won't be able to install stuff or save anything. But if you just want to go through some Linux shell tutorials or use a free word processor or image editor it will work fine.
Two, since it runs off the CD it requires about 128 MB for the OS (compared to 96 for WIndows that isn't on a CD, that's not TOO bad), and it's a bit slower than if you actually had it installed.
Three, I don't know enough about it to help you out if you have questions. But there is a pretty good user base with Linux that probably can help.
And if you do like it, you can install it on your system as a dual boot OS (sorry I don't have any info on this one at the moment).
I'm not trying to sell anything. I really like the potential of Linux, but still find I need a PC to use Photoshop, Flash and Maya, so I'm not trying to start a Linux Rocks/PC's suck argument. I'm just trying to help out people who may be in the "how do I get experience in this?" stage of looking for work.