Here is the top 10 must have books for Unix and Linux , these are great books for any one working in Unix and Linux from beginner to advance users improve skills and go deeper to understand, learn, program and manage Unix and Linux systems.

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1. Unix and Linux System Administration Handbook by Evi Nemeth, Garth Snyder, Trent R. Hein, “Must have book for system administrators, straightforward, full of facts and examples” Targeted at beginners to intermediate levels it covers everyday system administration tasks along with storage, network , email, web hosting, scripting, software configuration management, performance analysis, Windows interoperability, virtualization, DNS, security, management of IT service organizations. 2. Essential System Administration: Tools and Techniques for Linux and Unix Administration, 3rd Edition by Æleen Frisch “A classic system administration books last released in year 2002 but still much relevant and helpful for system administrators” Targeted at beginners, provides hand on approach to real world by explanation and examples. Several Unix flavors such as AIX, FreeBSD, HP-UX, Solaris, Tru64 along with Linux environments are covered along with DHCP, USB devices, automation tools, SNMP , network management, LDAP and PAM topics.

3. How Linux Works: What Every Superuser Should Know

by Brian Ward

“Easy to read and understand with an overview of how Linux works to get started as Linux System administration” Recommended for new Linux system administrator and absolute Beginners who are getting started in Linux or those switching from windows, programming or other fields to start working as system admin or someone who wants to try Linux setup and administration for themselves. 3. Linux Bible by Christopher Negus “Hands-on Linux user guide and great reference book to have.” Recommended for users who are already familiar with Linux and need reference book to consult for issues , solutions , troubleshooting and procedures. Covers the current versions of Red Hat Enterprise Linux , Fedora and Ubuntu LTS, along with cloud computing and guidance on Openstack and Cloudforms. 4. The Linux Command Line: A Complete Introduction by William E. Shotts Jr. “Must have beginner’s guide to get familiar with Linux Command line interface” Recommended for Linux beginners to get up to speed fast and start system administration tasks using command line in this book written in fun style with lots of examples.

5. Linux Command Line and Shell Scripting Bible by Richard Blum and Christine Bresnahan “Explains Linux commands its variation , correct and incorrect usages and in depth” Recommended for Linux system administrators who want to advance their command line skill writing scripts and create script based solutions. You can learn many things in scripting that you didn’t knew earlier.

6. bash Cookbook : Solutions and Examples for bash Users

by Carl Albing

A must have bash Cookbook with scenario and solution style writing with detailed explanations

“Recommended for users starting BASH scripting or trying to enhance their BASH skill”

7. Practice of System and network Administration

by Thomas A. Limoncelli and Christina J. Hogan

“Not a technical book but Offers best practices and advice for technical & soft skills”

Targeted at system administrators who want to advance their career by thinking and building solutions and improve personal skills. like “building reliable , scalable and secure services , personal skills like “getting more done each day” and soft skills like “System administration salary negotiation.

8. The Design of the UNIX Operating System

by Maurice J. Bach

“A ‘must read’ for everybody interested in understanding the Design of the UNIX Operating” Targeted at intermediate or advanced Unix users who want to learn Unix OS core design in a simple and easy to understand . Originally published in 1986 but still this is considered the best book for learning Unix core and still used as reference book by the authors of newer Unix related books. 9. Advanced Programming in the UNIX Environment (Addison-Wesley Professional Computing Series) by W. Richard Stevens and Stephen A. Rago “A must have reference book for UNIX class Programmers” Targetted at intermediate or advanced Unix programmers, the book covers more than seventy new interfaces more than ten thousand lines of downloadable, ISO C source code demonstrating than four hundred system calls and functions. 10. The Linux Programming Interface: A Linux and UNIX System Programming Handbook 1st Edition by Michael Kerrisk “A must have for Linux/Unix programmers , the single most comprehensive book for GNU/Linux programming interface.” Recommended for software engineers switching to Linux programming and Linux programmers who want to have a excellent reference to Linux programming interface.