About

Imported from chaterm/terminal-skills (linux/system-admin/SKILL.md) via skills.sh. Install upstream with npx skills add chaterm/terminal-skills --skill system-admin. Copyright stays with the author.

Linux System Administration

Name: system-admin
Author: chaterm

Overview

Core commands and best practices for Linux system administration, including system information viewing, resource monitoring, service management, etc.

System Information

Basic Information

# System version
cat /etc/os-release
uname -a

# Hostname
hostnamectl

# Uptime and load
uptime

Hardware Information

# CPU information
lscpu
cat /proc/cpuinfo

# Memory information
free -h
cat /proc/meminfo

# Disk information
lsblk
df -h

Resource Monitoring

Real-time Monitoring

# Comprehensive monitoring
top
htop

# Memory monitoring
vmstat 1

# IO monitoring
iostat -x 1
iotop

# Network monitoring
iftop
nethogs

Historical Data

# System activity report
sar -u 1 10    # CPU
sar -r 1 10    # Memory
sar -d 1 10    # Disk

Service Management

Systemd Services

# Service status
systemctl status service-name
systemctl is-active service-name

# Start/Stop services
systemctl start/stop/restart service-name

# Boot startup
systemctl enable/disable service-name

# View all services
systemctl list-units --type=service

Common Scenarios

Scenario 1: System Health Check

# Quick health check script
echo "=== System Load ===" && uptime
echo "=== Memory Usage ===" && free -h
echo "=== Disk Usage ===" && df -h
echo "=== Failed Services ===" && systemctl --failed

Scenario 2: Troubleshoot High Load

# 1. Check load
uptime

# 2. Find high CPU processes
ps aux --sort=-%cpu | head -10

# 3. Find high memory processes
ps aux --sort=-%mem | head -10

Troubleshooting

Problem	Commands
System lag	`top`, `vmstat 1`, `iostat -x 1`
Disk full	`df -h`, `du -sh /*`, `ncdu`
Memory shortage	`free -h`, `ps aux --sort=-%mem`
Service abnormal	`systemctl status`, `journalctl -u`

Use it

Copy one of these into your project. Installing also returns the manifest and these snippets.

yaml

targets:
  - https://api.opensmartroute.ai/api/v1/registry/chaterm-terminal-skills-system-admin/manifest   # or paste the manifest below

Manifest

An Open Capability Manifest: the router reads it to know what this does, what it costs and when to pick it.

chaterm-terminal-skills-system-admin.ocm.jsonjson

{
  "ocm": "1",
  "id": "chaterm-terminal-skills-system-admin",
  "kind": "skill",
  "name": "system-admin",
  "description": "Linux system administration and monitoring",
  "publisher": "chaterm",
  "version": "1.0.0",
  "capabilities": {
    "domains": [
      "general"
    ],
    "tags": [
      "skill-md",
      "linux",
      "system",
      "monitoring",
      "admin",
      "skills-sh"
    ],
    "languages": [
      "en"
    ]
  },
  "quality_prior": 0.6,
  "examples": [
    "Linux system administration and monitoring"
  ],
  "primary": false,
  "metadata": {
    "source": {
      "provider": "skills.sh",
      "repository": "https://github.com/chaterm/terminal-skills",
      "path": "linux/system-admin/SKILL.md",
      "ref": "HEAD",
      "url": "https://www.skills.sh/chaterm/terminal-skills/system-admin",
      "key": "chaterm/terminal-skills/linux/system-admin/SKILL.md"
    }
  },
  "instructions": "# Linux System Administration\n\n## Overview\nCore commands and best practices for Linux system administration, including system information viewing, resource monitoring, service management, etc.\n\n## System Information\n\n### Basic Information\n```bash\n# System version\ncat /etc/os-release\nuname -a\n\n# Hostname\nhostnamectl\n\n# Uptime and load\nuptime\n```\n\n### Hardware Information\n```bash\n# CPU information\nlscpu\ncat /proc/cpuinfo\n\n# Memory information\nfree -h\ncat /proc/meminfo\n\n# Disk information\nlsblk\ndf -h\n```\n\n## Resource Monitoring\n\n### Real-time Monitoring\n```bash\n# Comprehensive monitoring\ntop\nhtop",
  "cost": {
    "context_tokens": 470
  }
}

Fetch it by URL: GET /api/v1/registry/chaterm-terminal-skills-system-admin/manifest?version=1.0.0

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