Blog 15 Leveling Up Shell: Idempotent Scripts, Deployments & Log Cleanup
Idempotency, Deployment & Log Cleanup in Shell Scripting 🖥️Idempotency, Deployment & Log Cleanup in Shell Scripting Welcome back to the journey 🚀 In blog 14 , we learned about functions and loops. Now in blog 15 , we step into real-world server automation concepts. 🔁 1️⃣ What is Idempotency? Idempotent = Same result no matter how many times you run it id ec2-user &>/dev/null || useradd ec2-user 🌐 2️⃣ Idempotency in HTTP Methods Method Idempotent? Why GET ✅ Only reads data PUT ✅ Updates same resource DELETE ✅ (mostly) Deleting again gives “not found” POST ❌ Creates new data each time 🚀 3️⃣ Deployment Steps (Real Server) rm -rf /app/* git clone repo-url /app cd /app && npm install systemctl restart myapp 📂 4️⃣ Log Management in Linux find /var/log/myapp -name "*.log" -mtime +14 -delete 📦 5️⃣ Archiving Old Logs mkdir -p /archi...