System Health Skill

Check system resource usage and health status.

When to Use

✅ USE this skill when:

• User asks about system performance

• Need to check resource usage

• Diagnose slow performance

• Check disk space

• List running processes

Commands

CPU & Load

System load average

uptime

CPU info

cat /proc/cpuinfo | head -20

Detailed CPU stats

mpstat 1 1 2>/dev/null || top -bn1 | head -15

Memory

Memory usage

free -h

Memory details

cat /proc/meminfo | head -10

Swap usage

swapon -s

Disk

Disk space (human readable)

df -h

Disk usage by directory

du -sh /* 2>/dev/null | sort -hr | head -10

Disk inodes

df -i

Processes

Top processes by CPU

ps aux --sort=-%cpu | head -15

Top processes by memory

ps aux --sort=-%mem | head -15

Running processes count

ps aux | wc -l

Specific process check

ps aux | grep -E "node|python|docker" | head -10

Network

Network connections

ss -tunapl | head -20

Listening ports

ss -ltnp

Network interface stats

ip -s link

System Info

OS version

cat /etc/os-release

Kernel version

uname -a

System uptime

uptime -s

Combined Health Check

#!/bin/bash echo "=== System Health Check ===" echo "" echo "Uptime: $(uptime -p)" echo "" echo "=== Memory ===" free -h | grep -E "Mem|Swap" echo "" echo "=== Disk ===" df -h / | tail -1 echo "" echo "=== Top CPU ===" ps aux --sort=-%cpu | head -6 | tail -5 echo "" echo "=== Top Memory ===" ps aux --sort=-%mem | head -6 | tail -5

Notes

• Different commands available on Linux vs macOS

• Use htop for interactive monitoring if available

• Check for resource-hungry processes first