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- 218
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/chaterm/terminal-skills --skill network-tools- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads network-tools automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Network Tools and Diagnostics
Overview
Linux network diagnostics, port scanning, traffic analysis and other tool usage skills.
Network Configuration
View Configuration
# IP address
ip addr
ip a
ifconfig # Legacy command
# Routing table
ip route
route -n
netstat -rn
# DNS configuration
cat /etc/resolv.conf
systemd-resolve --status
Configure Network
# Temporary IP configuration
ip addr add 192.168.1.100/24 dev eth0
ip addr del 192.168.1.100/24 dev eth0
# Enable/Disable interface
ip link set eth0 up
ip link set eth0 down
# Add route
ip route add 10.0.0.0/8 via 192.168.1.1
ip route del 10.0.0.0/8
Connectivity Testing
ping
ping hostname
ping -c 4 hostname # Send 4 packets
ping -i 0.2 hostname # 0.2 second interval
ping -s 1000 hostname # Specify packet size
traceroute
traceroute hostname
traceroute -n hostname # Don't resolve hostnames
traceroute -T hostname # Use TCP
mtr hostname # Real-time trace
DNS Query
nslookup hostname
dig hostname
dig +short hostname
dig @8.8.8.8 hostname # Specify DNS server
host hostname
Ports and Connections
ss Command (Recommended)
# Listening ports
ss -tlnp # TCP listening
ss -ulnp # UDP listening
ss -tlnp | grep :80
# All connections
ss -tanp # TCP connections
ss -s # Statistics
# Filter
ss -t state established
ss -t dst 192.168.1.1
ss -t sport = :80
netstat Command
netstat -tlnp # TCP listening
netstat -ulnp # UDP listening
netstat -anp # All connections
netstat -s # Statistics
lsof Network
lsof -i # All network connections
lsof -i :80 # Specific port
lsof -i tcp # TCP connections
lsof -i @192.168.1.1 # Specific host
HTTP Tools
curl
# Basic request
curl http://example.com
curl -I http://example.com # Headers only
curl -v http://example.com # Verbose output
# POST request
curl -X POST -d "data=value" http://example.com
curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' http://example.com
# Download
curl -O http://example.com/file.zip
curl -o output.zip http://example.com/file.zip
# Authentication
curl -u user:pass http://example.com
curl -H "Authorization: Bearer token" http://example.com
wget
wget http://example.com/file.zip
wget -c http://example.com/file.zip # Resume download
wget -r http://example.com # Recursive download
wget --mirror http://example.com # Mirror site
Packet Capture
tcpdump
# Basic capture
tcpdump -i eth0
tcpdump -i any
# Filter
tcpdump -i eth0 port 80
tcpdump -i eth0 host 192.168.1.1
tcpdump -i eth0 'tcp port 80 and host 192.168.1.1'
# Save/Read
tcpdump -i eth0 -w capture.pcap
tcpdump -r capture.pcap
# Display content
tcpdump -i eth0 -A port 80 # ASCII
tcpdump -i eth0 -X port 80 # Hexadecimal
Traffic Monitoring
# Real-time traffic
iftop
iftop -i eth0
# By process
nethogs
nethogs eth0
# Bandwidth test
iperf3 -s # Server
iperf3 -c server_ip # Client
Common Scenarios
Scenario 1: Troubleshoot Port Usage
# Check port usage
ss -tlnp | grep :8080
lsof -i :8080
# Find process and handle
kill -9 PID
# Or
fuser -k 8080/tcp
Scenario 2: Test Service Connectivity
# TCP port test
nc -zv hostname 80
telnet hostname 80
# HTTP service test
curl -I http://hostname
curl -w "HTTP Code: %{http_code}\nTime: %{time_total}s\n" -o /dev/null -s http://hostname
Scenario 3: Network Performance Diagnosis
# Latency test
ping -c 100 hostname | tail -1
# Route analysis
mtr --report hostname
# Bandwidth test
iperf3 -c server -t 30
Troubleshooting
| Problem | Solution |
|---|---|
| Network unreachable | ping, traceroute, check routing |
| DNS resolution failed | dig, nslookup, check resolv.conf |
| Port unreachable | ss -tlnp, check firewall |
| Connection timeout | mtr, tcpdump packet capture |
| Insufficient bandwidth | iftop, iperf3 test |
FAQ
What does the network-tools skill do?
Linux network tools and diagnostics
How do I install network-tools?
Run npx skills add https://github.com/chaterm/terminal-skills --skill network-tools in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/network-tools/ (personal) or .claude/skills/network-tools/ (project).
Which AI agents can use network-tools?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is network-tools safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains network-tools?
It is published by chaterm in chaterm/terminal-skills. It has 218 recorded installs.
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