This section is dedicated to the SysAdmins, the superheroes for developers. I have listed a few free eBooks here for SysAdmin which will surely help anyone who is already a SysAdmin or aspirs to be one. I must add that you should also focus on essential Linux command lines as it will make your job easier.
The Debian Administration’s Handbook [eBook]
If you use Debian Linux for your servers, this is your bible. Book starts with Debian history, installation, package management etc and then moves on to cover topics like LAMP, virtual machines, storage management and other core sysadmin stuff.
This is an ideal book if you are preparing for LPI certification. The book deals straightway to the topics essential for sysadmins. So knowledge of Linux command line is a prerequisite in this case.
Another free eBook by Paul Cobbaut. The 370 pages long eBook covers networking, disk management, user management, kernel management, library management etc.
This is the last eBook by Paul Cobbaut in our list here. Security is one of the most important part of a sysadmin’s job. This book focuses on file permissions, acls, SELinux, users and passwords etc.