TLDR+ Linux: Hardening, Auditing and Monitoring

Cut through the clutter. Master Linux the practical way.

TLDR+ Linux is a hands-on guide to Linux administration, written for engineers, security specialists, sysadmins, and DevOps pros who want fast, reliable answers - directly from the terminal.

This isn't a beginner's tutorial. It's a cheatbook-meets-toolkit for people who work in Linux every day and want to:

• manage users, groups, services, and permissions

• troubleshoot, monitor, and automate with real commands

• secure systems using sudo, SSH hardening, firewalls, and AppArmor/SELinux

• analyze logs, audit changes, and detect misbehavior

• script common tasks with Bash and crontabs

• recover broken systems and understand what went wrong

Every section is packed with:
✅ tested commands
✅ concise explanations
✅ real-world scenarios
✅ quick-reference formatting

Whether you're configuring a hardened server, setting up auditd, or just need to remember that one systemctl flag you always forget - this book is for you.