Day 2 — Beginning My 40 Days AWS DevOps Journey

Source: Dev.to

Today was Day 2 of my 40‑day AWS + DevOps challenge. I focused on strengthening Linux fundamentals because every DevOps role requires fast command‑line skills—especially on EC2.

File & Permissions

• chmod – make scripts executable
• chown – fix file ownership
• df -h – check disk space
• du -sh – check folder size

Processes & Services

• ps aux – list running processes
• top – live CPU/RAM view
• systemctl status/start/restart – manage services (e.g., nginx, docker)

Networking

• curl – check if a service/website is responding
• ss -tulnp – list open ports

Logs

• /var/log/ – main log directory
• tail -f – watch logs in real time
• journalctl -u – view service logs (e.g., for Amazon Linux 2023)

Pipes

• ps aux \| grep nginx
• tail -f /var/log/messages \| grep error