Module 1: Introduction to Linux

• Understanding Linux Distributions
• Key Features of Red Hat Enterprise Linux (RHEL)
• Navigating the Command Line Interface (CLI)
• Accessing Help (man, info, help)
• Understanding File System Hierarchy

Module 2: Essential Tools and File Management

• Basic File Management Commands (ls, cp, mv, rm, touch, etc.)
• Viewing and Editing Files (cat, less, vim, nano)
• Managing File and Directory Permissions:
• Using chmod, chown, and chgrp
• Special Permissions: SUID, SGID, and Sticky Bit
• Using Wildcards and Regular Expressions
• Archiving and Compressing Files (tar, gzip, bzip2, zip)

Module 3: Users and Groups

• Creating and Managing Users (useradd, passwd, usermod, userdel)
• Group Management (groupadd, gpasswd, groupmod, groupdel)
• Understanding /etc/passwd, /etc/shadow, and /etc/group
• Configuring User Password Aging
• Managing User Profiles (.bashrc, .bash_profile)

Module 4: Process Management

• Understanding Linux Processes
• Managing Processes (ps, top, kill, jobs, bg, fg)
• Scheduling Tasks with cron and at
• Controlling Resource Usage with ulimit

Module 5: Package Management

• Introduction to RPM and YUM/DNF
• Installing, Updating, and Removing Software Packages
• Managing Software Repositories
• Querying and Verifying Packages (rpm -q, rpm -V)

Module 6: System Initialization and Boot Management

• Understanding the Boot Process
• Managing GRUB2 Boot Loader
• Systemd Overview and Managing Units
• Managing Services (systemctl start/stop/status)
• Managing Targets (isolate, set-default)
• Configuring System Boot Targets
  

Module 7: Disk and Storage Management

• Partitioning Disks with fdisk and parted
• Managing File Systems:
• Creating and Mounting File Systems
• ext4, xfs, and vfat File Systems
• Logical Volume Manager (LVM):
• Creating Physical Volumes, Volume Groups, and Logical Volumes
• Resizing and Extending LVMs
• Managing Swap Space
  

Module 8: Networking Essentials

• Configuring Network Interfaces
• Managing Hostnames and /etc/hosts
• Configuring Static and Dynamic IP Addresses
• Managing DNS Resolution
• Troubleshooting Network Issues (ping, traceroute, netstat, ss)
  

Module 9: Security and SELinux

• Managing Firewalld Rules (firewall-cmd)
• Configuring SELinux:
• Modes: Enforcing, Permissive, and Disabled
• Managing SELinux Contexts and Labels
• Using semanage, restorecon, and chcon
• Secure Shell (SSH) Configuration and Management
  

Module 10: System Monitoring and Logging

• Viewing System Logs with journalctl
• Configuring and Managing Log Rotation
• Monitoring System Resources (free, df, du, vmstat, iostat)
• Analyzing Performance Bottlenecks (top, htop, sar)

Module 11: Managing Kernel Modules and Tuning

• Understanding and Loading Kernel Modules (lsmod, modprobe, insmod, rmmod)
• Modifying Kernel Parameters with sysctl
  

Module 12: Automation with Bash Scripting

• Writing Basic Shell Scripts
• Using Conditional Statements and Loops
• Automating Administrative Tasks with Scripts
• Scheduling Scripts with Cron Jobs
  

Module 13: Troubleshooting and Rescue

• Diagnosing Boot Issues
• Accessing Emergency and Rescue Modes
• Recovering Root Password
• Troubleshooting Common File System and Network Issues
  

Module 14: Exam Preparation

• Understanding RHCSA Exam Objectives

Tips for Time Management During the Exam