Recently my wife had brought back a laptop with an Oracle Linux VM running on VMWare Fusion. It was based off RHEL 4.4 which I thought was pretty darned old. She was undergoing training at her new job and the class were trying to install the "screen" command with yum. Apparently not even the trainer could figure out how to get "yum" to work.
The first thing I noticed was the Red Hat subscription message:
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Install Process
No package screen available.
I'd never setup an RHEL OS before, so I looked for online repos to add to yum.repos.d, and tried to enable the "rhel-source" repo that was available by default, but no dice.
After a bit of playing around, I realized I had to activate Red Hat subscription. I was quite surprised the company would give out VMs with expired/no subscriptions to freshies, for training! Instructions here: https://access.redhat.com/solutions/253273
First you have to create an account on the Red Hat portal. You can choose "Personal" or "Corporate", this confused me for awhile because you can't get an Evaluation Subscription without a corporate email address. This was restrictive based on the email address you provided (I gave a gmail account), but then changed it to her company's provided one. Then you have to activate the subscription, otherwise you'll get: <user> cannot register with any organizations. Once you have a subscription, you'll be able to run "yum install screen" (or any package for that matter!)
Hope this helps someone!
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