RedHat
 

Hi,

I am total newbie when it comes up to Linux but trying to eventually become Linux System Administrator working on RedHat Enterprise.

I just installed it and realized I can't install any repos. Every time I get this message when I use "yum install":

Loaded plugins: langpacks, product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
There are no enabled repos.
Do I have to pay for subscription to be able to play with it since I just started learning linux. It is over kill to through thousands of dollars down the toilet before I even know if this is for me or not.

Have a look at this:

https://en.wikipedia.org/wiki/Red_Ha...ux_derivatives

CentOS looks like it might be a good choice.

Thanks for prompt answer!!! I am aware of CentOS been free but I heard that RedHat is cutting edge and just thought it might be smart to start right from the best. On the other hand I heard it is not very smart for absolutely beginner to play with RedHat in the first place. What is your opinion? Bare in mind guys that I just installed Linux for the first time like 2 hours ago! No previous server or networking experience what so ever. I've been around computers and mess around but pretty new to this whole thing.

Hi and welcome on board,

Red Hat Enterprise is most definitely NOT cutting edge. It is a rock solid, mature distribution mostly used as an entreprise server. There is a free version which is Centos. It may be worth a flock through their website.

https://www.centos.org/

If you want to be an admin then the functionality of RHEL is also present in Centos.

If you are however looking for a cutting edge distribution then Fedora is RedHat's development distro.

https://getfedora.org/

While there is a server spin, Fedora is mostly used as a desktop.

HTH

OK lets flip the coin then. From pure economic prospective which distro is more promising Red Hat or CentOS? I'm going to guess that at list some of you make living working with Linux. Where would it be easier to find a job? CentOS or Red Hat? Are admins comparable payed working on CentOS and Red Hat?

Hi...

Welcome to the forum :)

Considering what you said in your first post...

Since CentOS is very similar to RHEL, it would a lot cheaper for you to find this out using the "free version," which CentOS is. ;)

Regards...

and you can migrate from RHEL to CentOS very easily

or
buy the $299 per year support contract
and USE that support while you learn the RHEL 7.2 operating system

the wiki has the instructions for cent5 and 6
For 7.2 you need to port the instructions
https://wiki.centos.org/HowTos/MigrationGuide

or reinstall
takes only 30 min.
https://www.centos.org/download/

or what i run
ScientificLinux
https://www.scientificlinux.org/


rhel is VERY!!!! conservative in it's approach
the code is VERY well tested and hence OLDER -- it is NOT the "cutting edge"

Fedora is that

Thanks guys you are awesome! I heard that Linux has very strong community but didn't expect so many helpful advice in short time. I already deleted Red Hat and have CentOS :) Did a little research on line and sure enough everything you guys said is right. I'll defiantly play with CentOS and forget Red Hat for now. I mean after all it is 99% same stuff so if I learn CentOS I automatically know Red Hat.

Now since I told you I'm total beginner. Can you guys point me where to start, what books to get? I bet this has been asked many times so far around this forum so if you can give me a link to some posts that would be great. Do I need some ground knowledge about networks them selves. I already have two books:

The Practice of System and Network Administration (Second Edition) [Thomas A. Limoncelli]
Computer Networking A Top-Down Approach (Sixth Edition) [James F. Kurose]

They appear to be great but again I'm kind of worried it is more then I'll need. I don't plan on waisting time on stuff I wont need. Of course it is nice to have broad knowledge but for now I want to stay on a right path and not steer around. I don't want something that usually takes 2 years for instance to take me 5 years to master just because I'm using wrong path.

John and Timl: I just read and again you guys are right. Fedora is cutting edge where everything is tested first before implemented into Red Hat and then it is passed down to CentOS. I expressed my self wrong by cutting edge I meant rock solid. Of course anything that is cutting edge and opens new frontiers is by definition unreliable and unstable which is obviously not acceptable when you aspire to be OS of choice for large enterprises.