Linux is an indispensable skill for students, cloud engineers, and DevOps professionals alike, providing the foundation for working with modern infrastructure, cloud platforms, and automation technologies

Module 1: Introduction to Linux for DevOps

• Overview of Linux Operating System in DevOps
• Understanding Linux distributions and their role in DevOps (Ubuntu, CentOS, Debian, etc.)
• Basic Linux commands and file system navigation
• Working with users and permissions (chmod, chown, umask)
• Process management (ps, top, kill, nice)
• Understanding the Linux boot process and services

Module 2: Essential Linux Commands for DevOps

• File and directory operations (ls, cp, mv, rm, mkdir, rmdir)
• Searching files and directories (find, locate, grep)
• Working with text files (cat, less, more, head, tail, awk, sed)
• Redirecting and piping output (>, >>, 2>&1, |)
• Using tar, zip, and gzip for file compression and extraction
• Basic networking commands (ping, ifconfig, netstat, ssh, scp, curl, wget)

Module 3: Understanding and Managing Processes

• Managing processes (ps, top, kill, pkill, bg, fg)
• Scheduling jobs (cron, at)
• Process management using systemctl and service
• Background and foreground processes, nohup
• Resource monitoring (free, df, du, iostat, vmstat)

Module 4: Working with Files and Text Processing

• Regular expressions with grep, sed, and awk for text processing
• Advanced text processing with sed, awk, and perl
• Using cut, sort, uniq, tr for data extraction and transformation
• Editing files using vi, vim, and nano
• Understanding log files and log rotation
• Parsing and analyzing logs in DevOps environments

Module 5: Introduction to Shell Scripting

• Basics of shell scripting: structure, variables, comments, and syntax
• Writing your first shell script
• Making scripts executable and running them
• Understanding and using shebang (#!/bin/bash, )
• Using control flow (if-else, loops, case)
• Functions and arguments in shell scripting

Module 6: Shell Scripting for Automation

• Automating common administrative tasks (system updates, backups, and monitoring)
• Writing scripts to interact with Linux system services (systemd, service)
• Automating deployments, application setup, and configuration management
• Using environment variables and configuration files in scripts
• Logging and error handling in scripts

Module 7: Managing System Services with Shell Scripting

• Understanding and managing systemd services
• Writing systemd service unit files
• Automating start, stop, and restart of services using shell scripts
• Creating custom service scripts for monitoring, logging, and notifications
• Writing scripts to manage application environments

Module 8: Package Management and Software Installation

• Installing, updating, and removing packages using apt, yum, and dnf
• Understanding package managers in different Linux distros
• Automating software installation and updates via scripts
• Working with Docker images and containers from shell scripts
• Using configuration management tools (Ansible, Puppet, Chef) through shell scripts

Module 9: Networking and Security in Linux for DevOps

• Configuring networking interfaces and firewall using iptables and ufw
• Configuring SSH for remote access and automation
• Understanding and implementing SSH key-based authentication
• Writing shell scripts for system security (log monitoring, user management, file permissions)
• Using iptables and firewalld for firewall management
• Network troubleshooting tools (traceroute, tcpdump, netcat)

Module 10: Advanced Shell Scripting for DevOps

• Writing complex shell scripts for system monitoring (disk space, memory, uptime, services)
• Automating log collection and reporting
• Creating cron jobs for regular maintenance tasks
• Integrating shell scripts with other DevOps tools (Git, Jenkins, Docker)
• Scripting for Cloud infrastructure management (AWS CLI, Azure CLI, GCP SDK)

Module 11: Continuous Integration and Continuous Deployment (CI/CD) with Shell Scripting

• Automating CI/CD pipelines using shell scripts
• Integrating with Jenkins, GitLab, and GitHub for automated deployments
• Writing scripts to automate testing, build, and deployment processes

• Using shell scripts for rollback and versioning of deployments

Module 12: Troubleshooting, Debugging, and Best Practices

• Debugging shell scripts (set -x, set -e)
• Error handling and reporting in scripts
• Best practices for writing maintainable shell scripts
• Using shell script version control and documentation
• Performance tuning and optimization for shell scripts