Hi Elf Wizard,
LarryT and class413 have good advice, I take it as gosepl. But I noticed you are "making my first steps to Linux world".
Here is my unsolicited advice to you: Blow off Linux, it is a dead end road. Not because it isn't great but because it has been changed and rearranged so many times, that commands in some flavers won't work in others and so on. 10 years from now, Linux will have gone the way of DOS.
Step up to Unix, you have a learning curve ahead of you anyway, might as well make it count. OpenSolaris absolutly rocks and its free, with tons of accurate documentation created by the people who wrote the OS. That is much different than Linux docs, which ususally come from people who come from a one sided view.
Like so: Red Hat users use YUM, while Debian users use APT. But all Solaris versisons use PKGADD, Unix is more uniform in its commands and simply better than Linux. I am all about OpenSolaris, but FreeBSD is equally as potent. Both of these kick Linux butt all day long.
Have a nice day,
Chooch