Linux Administration

Linux Administration encompasses the management, configuration, and maintenance of systems running the Linux operating system. This critical role involves a wide range of tasks, including installing and updating software, managing user accounts and permissions, monitoring system performance, implementing security measures, and troubleshooting issues to ensure operational reliability. Administrators typically work extensively with the command-line interface to configure network services, automate routine tasks through scripting, and maintain the health of servers, desktops, and cloud infrastructure, making it a fundamental skill for supporting modern IT environments.

1. Introduction to Linux and System Administration
   1. Overview of Linux
      1. History and Evolution of Linux
      2. Key Features of Linux
      3. Use Cases and Applications
   2. Core Concepts of Linux
      1. The Linux Kernel
         1. Kernel Functions and Responsibilities
         2. Kernel Versions and Updates
         3. Kernel Modules and Drivers
      2. The GNU Project
         1. GNU Utilities and Tools
         2. Relationship with Linux Kernel
      3. Open Source Philosophy
         1. Principles of Open Source
         2. Licenses
            1. GPL
            2. MIT
            3. Apache
         3. Community and Collaboration
      4. Linux Distributions
         1. Distribution Families
            1. Debian-based Distributions
               1. Ubuntu
               2. Linux Mint
            2. Red Hat-based Distributions
               1. Red Hat Enterprise Linux (RHEL)
               2. CentOS
               3. Fedora
            3. Arch-based Distributions
               1. Arch Linux
               2. Manjaro
            4. Other Distributions
               1. SUSE
               2. Gentoo
               3. Slackware
         2. Choosing a Distribution
         3. Package Management Differences
   3. The Role of a Linux System Administrator
      1. Core Responsibilities
      2. Required Skills and Competencies
      3. Typical Workflows and Tasks
      4. Professional Certifications
   4. Understanding the Linux Filesystem Hierarchy Standard (FHS)
      1. Purpose and Structure of FHS
      2. Key Directories
         1. /bin and /sbin
            1. Essential User Binaries
            2. System Binaries
         2. /etc
            1. Configuration Files
         3. /home
            1. User Home Directories
         4. /lib
            1. Shared Libraries
         5. /opt
            1. Optional and Third-Party Software
         6. /proc
            1. Virtual Filesystem for Process Information
         7. /root
            1. Root User Home Directory
         8. /tmp
            1. Temporary Files
         9. /usr
            1. User Programs and Data
         10. /var
             1. Variable Data Files
      3. Navigating the Filesystem