How To CentOS / RHEL 7 Install Gnome Desktop Using Yum

I installed minimal CentOS Linux 7.x on my laptop. How can I install Gnome desktop GUI on a RHEL (Red Hat) 7 or CentOS Linux 7 system using command line option?

GNOME is a highly intuitive and user friendly desktop environment for CentOS and RHEL 7.x based system. If you did a minimal install, this guide will quicly tell you how to install Gnome GUI on a CentOS 7 or RHEL 7 using a command line options.

Read More

RHEL / Centos Linux 7: Change and Set Hostname Command

I'm a new RHEL (Red Hat Linux) and/or CentOS Linux 7 server user. How can I change the hostname in CentOS 7 using a command line option?

On a CentOS Linux 7 server you can use any one of the following tool to manage hostnames:

Read More

CentOS/RHEL Use yum Command To Downgrade or Rollback Updates

I'm a CentOS Linux 7.x server user. How can I use yum command to downgrade or rollback package updates on a RHEL (Red Hat)/CentOS/Scientific Linux server?

In this tutorial, you will learn:

1. How to downgrade installed packages using YUM
2. How to rollback installed package to previous version

The following examples only work on

Read More

RHEL / CentOS Linux 7 Enable Ping Access In Docker Container

I'm using RHEL 7.1-4 container on a RHEL /CentOS Linux 7.x server. However, I'm unable to ping external site/IP address using the ping command. I'm getting the following error on screen:

ping: Operation not permitted

How do I fix this problem?

Linux kernel v2.2+, divides the privileges traditionally associated with superuser into distinct units, known as capabilities, which can be independently enabled and disabled. Capabilities are a per-thread attribute. For example, CAP_NET_ADMIN capabilities perform various network-related operations such as:

Read More