Find out where your RAM has gone on Linux

wheres-my-ram.sh

echo "Searching for RAM - Please hold..."
for pid in /proc/[0-9]*; do
    if [ -f "$pid/status" ]; then
        name=$(grep "^Name:" "$pid/status" 2>/dev/null | awk '{print $2}')
        rss=$(grep "^VmRSS:" "$pid/status" 2>/dev/null | awk '{print $2}')
        swap=$(grep "^VmSwap:" "$pid/status" 2>/dev/null | awk '{print $2}')
        
        rss=${rss:-0}
        swap=${swap:-0}
        total=$((rss + swap))
        
        if [ "$total" -gt 102400 ]; then # > 100 MB total
            ram_mb=$((rss / 1024))
            swap_mb=$((swap / 1024))
            total_mb=$((total / 1024))
            echo "$total_mb MB Total ($ram_mb MB RAM + $swap_mb MB Swap) -> $name (PID: ${pid##*/})"
        fi
    fi
done | sort -nr | head -n 20