UNIX for Dummies Questions & Answers

OK, I've used various versions of UNIX(Solaris, HPUX, etc..) over the years. Now the organization I work for is leaning towards more Linux based systems(Redhat, Suse, etc..)

I do see differences in in comands and how to accomplish basic adminstration, but nothing mind blowing.

So, what is it that makes linux a Unix like o/s? What are the differences that seperate the two?

Please see this link

A very handy reference is called the Unix Rosetta Stone. This lists side-by-side my similar actions on various *nix OS's, comparing their commands.

What are the different flavors of Linux?

There are a ton. Red Hat, Suse, Mandrake, Knoppix, Slackware, Debian, Beehive Linux, SOT Linux, BlueCat Linux, Linux by LibraNet , Gentoo Linux ,Hard Hat Linux ....well you get the point...Linux Distribution List

I'll pre-empt the next question

You can download ISO images for most of the distributions from http://www.linuxiso.org/

Cheers
ZB