🌸 Initial commit — Midori's Linux Dojo

🌸 Midori's Linux Dojo/Phase 6 - Automation/Exercises.md

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+# 🧪 Phase 6: Automation
+
+> Goal: Real admin skills — scripting, cron, text processing
+
+---
+
+## 🎯 Exercise 1 — Shell Scripting
+
+```bash
+# Create a backup script
+cat > /root/lab/scripts/backup.sh << 'EOF'
+#!/bin/sh
+BACKUP_DIR="/root/backups/$(date +%Y%m%d)"
+mkdir -p "$BACKUP_DIR"
+tar -czf "$BACKUP_DIR/lab-backup.tar.gz" /root/lab/
+echo "Backup saved to $BACKUP_DIR"
+EOF
+
+chmod +x /root/lab/scripts/backup.sh
+./root/lab/scripts/backup.sh
+```
+
+---
+
+## 🎯 Exercise 2 — Variables & Loops
+
+```bash
+#!/bin/sh
+# Variables
+NAME="World"
+echo "Hello, $NAME!"
+
+# For loop
+for i in 1 2 3 4 5; do
+    echo "Count: $i"
+done
+
+# While loop
+COUNT=0
+while [ $COUNT -lt 3 ]; do
+    echo "Loop $COUNT"
+    COUNT=$((COUNT + 1))
+done
+
+# Conditionals
+if [ -f /root/hello.txt ]; then
+    echo "File exists!"
+else
+    echo "File not found"
+fi
+```
+
+---
+
+## 🎯 Exercise 3 — Cron Jobs
+
+```bash
+# Edit crontab
+crontab -e
+
+# Add a job that runs every hour:
+0 * * * * /root/lab/scripts/backup.sh
+
+# List cron jobs
+crontab -l
+
+# Check cron logs
+cat /var/log/cron
+```
+
+---
+
+## 🎯 Exercise 4 — Text Processing with grep/awk/sed
+
+```bash
+# grep — search
+grep "root" /etc/passwd
+grep -r "alpine" /etc/
+
+# awk — column extraction
+awk -F: '{print $1, $6}' /etc/passwd
+df -h | awk '{print $5, $6}'
+
+# sed — search & replace
+sed 's/root/admin/' /etc/passwd > /tmp/test.txt
+head -5 /tmp/test.txt
+```
+
+---
+
+## 🎯 Final Project
+
+Create a single script that **automates the entire setup** of both lab VMs:
+
+```bash
+1. Installs and configures SSH
+2. Sets up static IPs
+3. Configures firewall rules
+4. Installs and starts a web server
+5. Sets up NFS share
+6. Creates users
+7. Schedules backups with cron
+```
+
+---
+
+## ✅ Phase 6 Checklist
+- [ ] Shell scripts with variables, loops, conditionals
+- [ ] Cron jobs for automation
+- [ ] Text processing with grep/awk/sed
+- [ ] Final project: full automation script
+
+**Previous:** [[Phase 5 - Server Stuff]]