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You're reading from Fedora 31 Essentials Learn how to install, administer, and deploy Fedora 31 systems

Product type Paperback

Published in Apr 2020

Publisher Packt

ISBN-13 9781800562790

Length 271 pages

Edition 1st Edition

Tools

Fedora

Concepts

System Administration

Author (1):

Neil Smyth

View More author details

Table of Contents (32) Chapters

1. Introduction

2. A Brief History of Linux FREE CHAPTER

3. Installing Fedora 31 on a Clean Disk Drive

4. Dual Booting Fedora 31 with Windows

5. Allocating Windows Disk Partitions to Fedora 31

6. A Guided Tour of the GNOME 3 Desktop

7. An Overview of the Fedora 31 Cockpit Web Interface

8. Using the Bash Shell on Fedora 31

9. Managing Fedora 31 Users and Groups

10. Understanding Fedora 31 Software Installation and Management

11. Configuring Fedora 31 systemd Units

12. Fedora 31 Network Management

13. Basic Fedora 31 Firewall Configuration with firewalld

14. Configuring SSH Key-based Authentication on Fedora 31

15. Fedora 31 Remote Desktop Access with VNC

16. Displaying Fedora 31 Applications Remotely (X11 Forwarding)

17. Using NFS to Share Fedora 31 Files with Remote Systems

18. Sharing Files between Fedora 31 and Windows Systems with Samba

19. An Overview of Virtualization Techniques

20. Installing KVM Virtualization on Fedora 31

21. Creating KVM Virtual Machines using Cockpit and virt-manager

22. Creating KVM Virtual Machines with virt-install and virsh

23. Creating a Fedora 31 KVM Networked Bridge Interface

24. Managing KVM using the virsh Command-Line Tool

25. An Introduction to Linux Containers

26. Working with Containers on Fedora 31

27. Setting Up a Fedora 31 Web Server

28. Configuring a Fedora 31 Postfix Email Server

29. Adding a New Disk Drive to a Fedora 31 System

30. Adding a New Disk to a Fedora 31 Volume Group and Logical Volume

31. Adding and Managing Fedora 31 Swap Space

Index

4.2 Changing the Default Boot Option

When the system starts, the boot options screen will appear and wait 5 seconds for the user to make an operating system choice. If no selection has been made before the timeout elapses, the default operating system will be started. On a newly configured system, the default operating system will be the standard (non-rescue) Fedora image. This default can, however, be changed from within Fedora.

A range of boot configuration options (including the 5 second timeout and the boot RHGB settings outlined in “Installing Fedora 31 on a Clean Disk Drive”) are declared in the /etc/default/grub file which reads as follows on a new installation:

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed ‘s, release .*$,,g’ /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="resume=/dev/mapper/fedora-swap rd.lvm.lv=fedora/root rd.lvm.lv=fedora...