Book Image

Red Hat Enterprise Linux 8 Essentials

By : Neil Smyth
1 (1)
Book Image

Red Hat Enterprise Linux 8 Essentials

1 (1)
By: Neil Smyth

Overview of this book

Red Hat Enterprise Linux 8 is one of the most secure and dependable operating systems available. For this reason, the ambitious system or network engineer will find a working knowledge of Red Hat Enterprise 8 to be an invaluable advantage in their respective fields. This book, now updated for RHEL 8.1, begins with a history of Red Enterprise Linux and its installation. You will be virtually perform remote system administration tasks with cockpit web interface and write shell scripts to maintain server-based systems without desktop installation. Then, you will set up a firewall system using a secure shell and enable remote access to Gnome desktop environment with virtual network computing (VNC). You’ll share files between the Red Hat Enterprise Linux 8 (RHEL 8) and Windows System using Samba client and NFS. You will also run multiple guest operating systems using virtualization and Linux containers, and host websites using RHEL 8 by installing an Apache web server. Finally, you will create logical disks using logical volume management and implement swap space to maintain the performance of a RHEL 8 system. By the end of this book, you will be armed with the skills and knowledge to install the RHEL 8 operating system and use it expertly.
Table of Contents (32 chapters)
32
Index

10.2 The BaseOS Repository

The BaseOS repository contains the packages that make up the core functionality of the operating system. These software elements are downloaded in the form of Red Hat Package Manager (RPM) package files and then installed on the system. A typical RHEL 8 system will have around 1500 RPM packages installed. To see a list of all the RPM packages currently installed on the system simply run the rpm command as follows:

# rpm -qa | more

qemu-kvm-block-rbd-2.12.0-41.el8+2104+3e32e6f8.x86_64

kyotocabinet-libs-1.2.76-17.el8.x86_64

cyrus-sasl-scram-2.1.27-0.3rc7.el8.x86_64

curl-7.61.1-5.el8.x86_64

.

.

A list of packages available for installation from the BaseOS repository is available by running the dnf command as follows:

# dnf list

To obtain a list of packages that match a search string use dnf as follows:

# dnf search "search string"

It is also possible to identify which package contains a specific file:

# dnf provides...