iwlist wlan0 scan | grep -E 'ESSID|Quality|Channel'

Category: Networking

iwlist wlan0 scan | grep -E 'ESSID|Quality|Channel'

Scan for nearby Wi-Fi networks and show SSID/quality

Triggers an active scan on the wireless interface and parses the output for network names (ESSID), signal quality, and channel. Useful for identifying channel congestion when troubleshooting slow Wi-Fi.
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