Day 1: Linux File System Structure
Day 2: File Operations (ls, cp, mv, rm)
Day 3: Text File Handling (cat, less, head, tail)
Day 4: File Permissions (chmod, chown)
Day 5: Users & Groups (useradd, groupadd)
Day 6: Directory Management (mkdir, rmdir, tree)
Day 7: File Searching (find, locate)
Day 8: Processes (ps, top, htop)
Day 9: Kill & Signals (kill, killall)
Day 10: Background & Foreground Jobs (&, jobs, fg, bg)
Day 11: Service Management (systemctl)
Day 12: Package Management (apt, yum, dnf)
Day 13: Disk Usage (df -h, du -sh)
Day 14: Memory & Swap (free -m, vmstat)
Day 15: IP & Hostname (ip addr, hostnamectl)
Day 16: Connectivity Check (ping, curl, wget)
Day 17: Ports & Connections (netstat, ss)
Day 18: Firewall (ufw, iptables)
Day 19: SSH Basics (ssh, scp)
Day 20: Cron Jobs (crontab -e)
Day 21: Logs & Monitoring (journalctl, /var/log/)
Day 22: Bash Scripting Basics (variables, echo)
Day 23: Conditions & Loops (if, for, while)
Day 24: Log Parsing (grep, awk, sed)
Day 25: Backup Scripting (tar, gzip, rsync)
Day 26: Git Basics (git init, clone, commit, push)
Day 27: Docker Basics (docker run, docker ps)
Day 28: Ansible Basics (playbooks, ad-hoc commands)
Day 29: Terraform Basics (EC2 launch)
Day 30: Final Project (Mini DevOps Lab: Terraform + Ansible + GitHub + Docker)