System Doctor

Comprehensive system diagnostics and health check for Linux servers. Check disk usage, memory, CPU load, network interfaces, running services, and system info. Generate HTML health reports or JSON output. Use when the user wants to: (1) Check server health and resource usage, (2) Diagnose performance issues, (3) Generate system health reports for monitoring, (4) Check disk space on all mounted volumes, (5) Inspect memory and swap usage, (6) Troubleshoot network connectivity, (7) Audit running services.

System Doctor (sys-doctor)

Run comprehensive system diagnostics with a single command.

Quick start

bash

python3 skills/sys-doctor/scripts/sys_doctor.py

Output example:

text

◆ System Health Report: myserver
2026-05-10 13:30:00
============================================================
========================== DISK ==========================
  🟢 /              60%  (30G/50G, avail: 20G)
  🟡 /var/log       85%  (4.3G/5G, avail: 0.7G)
  🟢 /home          45%  (90G/200G, avail: 110G)
========================== MEMORY ========================
  RAM:    4.2G / 16G  (26%)
  Swap:   0.1G / 2G  (5%)
========================== CPU ============================
  Load:     0.45 / 0.32 / 0.28
  Cores:    4 (8 logical)
========================== NETWORK ========================
  🟢 eth0       UP    192.168.1.100/24
  🟢 docker0    UP    172.17.0.1/16
========================== SERVICES ======================
  • systemd-journald  • cron  • sshd  • docker
  • nginx  • postgresql  • redis-server

Commands

Command	Action
--check disk	Check only disk usage
--check memory	Check only memory/swap
--check cpu	Check only CPU load
--check network	Check only network interfaces
--check services	List running services
--report	Generate HTML health report
--json	Output as JSON
--output file.html	Save to specific file

HTML Reports

Generate a styled HTML report for sharing or monitoring:

bash

python3 skills/sys-doctor/scripts/sys_doctor.py --report
# Creates: sys-doctor-report-20260510-133000.html

JSON Output

For programmatic consumption (API, monitoring, dashboards):

bash

python3 skills/sys-doctor/scripts/sys_doctor.py --json

Health Status Logic

• Disk ≥ 90% → critical (exit code 2)
• Disk ≥ 80% → warning
• Disk < 80% → ok

The report's color-coded badges reflect overall health status.

Requirements

• Linux (primary) — uses /proc/, df, free, ip, systemctl
• macOS — partial support via psutil fallback (install: pip install psutil)
• No external API calls — fully offline