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Linux for System Administrators

You're reading from   Linux for System Administrators Navigate the complex landscape of the Linux OS and command line for effective administration

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Product type Paperback
Published in Sep 2023
Publisher Packt
ISBN-13 9781803247946
Length 294 pages
Edition 1st Edition
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Authors (2):
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Viorel Rudareanu Viorel Rudareanu
Author Profile Icon Viorel Rudareanu
Viorel Rudareanu
Daniil Baturin Daniil Baturin
Author Profile Icon Daniil Baturin
Daniil Baturin
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Toc

Table of Contents (21) Chapters Close

Preface 1. Part 1: Linux Basics
2. Chapter 1: Getting to Know Linux FREE CHAPTER 3. Chapter 2: The Shell and Its Commands 4. Chapter 3: The Linux Filesystem 5. Chapter 4: Processes and Process Control 6. Chapter 5: Hardware Discovery 7. Part 2: Configuring and Modifying Linux Systems
8. Chapter 6: Basic System Settings 9. Chapter 7: User and Group Management 10. Chapter 8: Software Installation and Package Repositories 11. Chapter 9: Network Configuration and Debugging 12. Chapter 10: Storage Management 13. Part 3: Linux as a Part of a Larger System
14. Chapter 11: Logging Configuration and Remote Logging 15. Chapter 12: Centralized Authentication 16. Chapter 13: High Availability 17. Chapter 14: Automation with Chef 18. Chapter 15: Security Guidelines and Best Practices 19. Index 20. Other Books You May Enjoy

The resolv configuration file

The resolv.conf file is an essential configuration file in Linux systems that is used to configure DNS resolution settings. DNS is responsible for translating human-readable domain names (such as www.example.com) into IP addresses that computers can understand. This translation is crucial for accessing websites, services, and other network resources on the internet. The file is located in the /etc directory and contains information about the DNS servers that the system should use to resolve domain names.

The resolv.conf file is used by various networking programs, including the system resolver library, web browsers, and email clients. When a user tries to access a website or connect to a remote server using its hostname, the system uses the resolv.conf file to find the corresponding IP address.

The resolv.conf file consists of several directives that define the DNS servers to use and the search domains to append to hostnames. The following are the...

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