Linux Networking Guía rápida

Network configuration and troubleshooting commands.

What this cheat sheet is for

This linux networking reference helps you complete common developer tasks quickly and avoid repeated trial-and-error when working under deadlines.

When you need a reliable command or pattern during debugging and incident response.
When you are implementing a feature and want a known-good syntax example immediately.
When onboarding teammates and documenting repeatable workflows for daily use.
When reviewing pull requests and verifying that command usage follows best practices.

Display network connections.

netstat -tulpn
ss -tulpn
netstat -r

Modern network configuration.

ip addr show
ip route show
ip link show
ip addr add 192.168.1.100/24 dev eth0

Test connectivity.

ping example.com
ping -c 5 example.com

Trace network path.

traceroute example.com
tracepath example.com

Query DNS records.

nslookup example.com
dig example.com
host example.com

Download with wget or curl.

wget https://example.com/file.zip
curl -O https://example.com/file.zip
curl -L https://example.com/file.zip

Configure interfaces.

ifconfig
ifconfig eth0 up
ifconfig eth0 192.168.1.100

People often copy a command or pattern without adapting placeholders, which can break production workflows unexpectedly.
It is easy to forget environment-specific differences, so always verify behavior in your shell, runtime, or API gateway before shipping.
Many errors come from skipping small validation steps, so test with realistic sample input before relying on the result.

Last updated: February 2026