claude-config/skills/sysadmin.md

System Administration Skill

System Info

uname -a                 # Kernel info
cat /etc/os-release      # OS details
hostname                 # Hostname
uptime                  # System uptime

Process Management

ps aux                  # All processes
top                     # Interactive view
htop                    # Better top
kill -9 pid             # Force kill
pkill process_name      # Kill by name

Memory & Disk

free -h                 # Memory usage
df -h                   # Disk usage
du -sh folder           # Folder size

Network

ip addr                 # IP addresses
netstat -tulpn          # Listening ports
ss -tulpn              # Alternative to netstat
curl url               # HTTP request
wget url               # Download

Services

systemctl status service
systemctl start service
systemctl stop service
systemctl restart service
systemctl enable service

User Management

whoami                  # Current user
id                       # User info
useradd name            # Add user
usermod -aG group user # Add to group
passwd user             # Change password

Logs

journalctl -u service   # Service logs
tail -f /var/log/syslog
dmesg | tail