Using the systemd command hostnamectl is the most convenient way on how to find the version of Redhat Linux installed. Red Hat Enterprise Linux Workstation users can also retrieve Redhat Linux from graphical user interface.

For more detailed options visit our guide on how to check RHEL version.

In this tutorial you will learn:
  • How to find Redhat Linux version from GUI.
  • How to find Redhat Linux version from command line.

In this tutorial we will be installing the Virtualbox guest additions on Redhat 8 Linux. Virtualbox guest additions allows for better screen resolution and mouse integration.

In this tutorial you will learn:
  • How to install Virtualbox guest additions compilation prerequisites.
  • How to mount Virtualbox guest additions ISO image.
  • How to execute Virtualbox guest additions compilation and installation.
  • How to check Virtualbox guest additions installation.

After installation of RHEL 8, Linux package repositories need to be enabled before you are able to install new packages. Any attempt to install new software will result with the following error message:
This system has no repositories available through subscriptions.
OR
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Error: There are no enabled repos.
OR
This system is registered to Red Hat Subscription Management, but is not receiving updates. You can use subscription-manager to assign subscriptions.
No repositories available
In this tutorial you will learn:
  • How to Register your system to Red Hat Subscription Management.
  • How to Attach RHEL 8 subscription to your system.
  • How to Enable RHEL 8 Repository.
  • How to Disable RHEL 8 Repository.

RHEL 8 comes by default, as it has been for many years already with a GNOME desktop environment. From this reason, in a broader sense when we talk about GNOME desktop installation we normally talk about RHEL 8 workstation.

In this tutorial we will be installing GNOME desktop as part of the workstation package group.

In this Install gnome on Redhat 8 tutorial you will learn:
  • How to install Gnome Desktop on Redhat 8.
  • How to change runlevel to boot to graphical interface in Redhat 8.

Objective

Our objective is to ensure that updating the operating system will run smoothly and without errors.

Operating System and Software Versions

  • Operating system: Red Hat Enterprise Linux 6+

Requirements

Privileged access to the systems

Difficulty

EASY

Conventions

  • # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command
  • $ - given linux commands to be executed as a regular non-privileged user

Introduction

Keeping the system up to date is an every day task for a sysadmin, as well as a desktop user. By applying the latest (stable) available software on the system we can take advantage of the latest features, and will be more protected from security issues and hopefully suffer less from bugs. To update the system you will need configured yum repositories that act as the source of the updated software.

If you sit next to the machine that is running the operating system to be updated, you can easily act if something goes wrong during update, like checking the output on the terminal, or boot to a live system if the upgraded one does not return from reboot - but this is not always the case. Think of a datacenter with hundreds or thousands of (virtual) machines, or simply a physical PC that you have to upgrade remotely.

There are simple steps we can perform to prepare the system for upgrade, and possibly clear any problem that would endanger a successful update.

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