Linux iw Guide

Linux iw Guide

Complete beginner-friendly guide to iw on Linux, covering Arch Linux, CachyOS, and other distributions including modern wireless configuration, WiFi management, and wireless network setup.

---

Table of Contents

1. iw Installation
2. iw Basics
3. Wireless Configuration
4. Network Scanning
5. Troubleshooting

---

iw Installation

Install iw

Arch/CachyOS:

# Install iw
sudo pacman -S iw

Debian/Ubuntu:

sudo apt install iw

Fedora:

sudo dnf install iw

---

iw Basics

List Interfaces

Basic usage:

# List wireless interfaces
iw dev

# Shows wireless devices

Interface Info

Device information:

# Interface information
iw dev wlan0 info

# Shows device information

---

Wireless Configuration

Scan Networks

Scan for networks:

# Scan for networks
sudo iw dev wlan0 scan

# Shows available networks

Connect to Network

Connect:

# Connect to network (use wpa_supplicant or NetworkManager)
# iw is for low-level configuration
# Use NetworkManager for connection

---

Network Scanning

Scan Results

View networks:

# Scan and show SSIDs
sudo iw dev wlan0 scan | grep SSID

# Shows network names

Signal Strength

Check signal:

# Signal information
sudo iw dev wlan0 scan | grep signal

# Shows signal strength

---

Troubleshooting

iw Not Found

Check installation:

# Check iw
which iw

# Install if missing
sudo pacman -S iw

---

Summary

This guide covered iw usage, wireless configuration, and WiFi management for Arch Linux, CachyOS, and other distributions.

---

Next Steps

• Networking - Network setup
• nmcli Guide - NetworkManager CLI
• iwconfig Guide - Legacy wireless tool
• iw Documentation: man iw

---

This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.