System Admin

Straightforward reference for the Linux sysadmin commands you reach for daily but don't always remember the flags for. Covers system info checks, resource monitoring with tools like top and sar, systemd service management, and quick troubleshooting workflows. The scenarios section is genuinely helpful, like the health check one-liner that runs uptime, free, df, and lists failed services in sequence. Nothing groundbreaking here, just a clean cheatsheet that saves you from googling "iostat syntax" for the hundredth time. Works best as a quick lookup when you're SSH'd into a box and need to figure out why it's dragging.

skills.sh installs: 570
GitHub stars: 59
last updated: Aug 21, 2026

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Install

$ npx -y skills add chaterm/terminal-skills --skill system-admin --agent claude-code

Installs into .claude/skills of the current project.

Files

Linux System Administration

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