gists/disk_usage.sh

#!/bin/bash

echo "🔍 Analyzing disk usage... Please wait."

# 1. Show overall disk usage
echo -e "\n📊 Disk Usage Overview:"
df -h

# 2. Show the largest directories in /
echo -e "\n📂 Top 10 Largest Directories in Root (/):"
du -ahx / 2>/dev/null | sort -rh | head -10

# 3. Show the largest directories in /home
echo -e "\n🏠 Top 10 Largest Directories in /home:"
du -ahx /home 2>/dev/null | sort -rh | head -10

# 4. Show the largest files over 1GB
echo -e "\n📄 Top 10 Largest Files Over 1GB:"
find / -type f -size +1G -exec ls -lh {} + 2>/dev/null | sort -k5 -rh | head -10

# 5. Check system logs
echo -e "\n📝 Checking Large Log Files in /var/log:"
sudo du -sh /var/log/* 2>/dev/null | sort -rh | head -10

# 6. Find large installed packages (Debian-based)
if command -v dpkg-query &> /dev/null; then
    echo -e "\n📦 Top 10 Largest Installed Packages (Debian-based):"
    dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -rh | head -10
fi

# 7. Find large installed packages (RPM-based)
if command -v dnf &> /dev/null; then
    echo -e "\n📦 Top 10 Largest Installed Packages (Fedora-based):"
    dnf list installed | awk '{print $2, $1}' | sort -rh | head -10
fi

echo -e "\n✅ Disk Usage Analysis Completed!"