[SOLVED] Iwchan.awk to show Wi-Fi info

Installing and Using OpenWrt
1

Hi all,

whe I run under 23.05.2 the iwchan.awk show I got here https://openwrt.org/docs/guide-user/network/wifi/iwchan?rev=1694213842, it works partially:

# ./iwchan.awk show
command failed: No such device (-19)
Phy:	phy0
Dev:		Interface phy0-ap0
Band:	1
FreqTh:	15
LoadTh:	1000

Freq	Channel	Signal	Quality	BSSID			SSID

Freq	Channel	Load	Status
2412	1	0	
2417	2	0	
2422	3	0	
2427	4	0	
2432	5	0	
2437	6	0	
2442	7	0	+
2447	8	0	
2452	9	0	
2457	10	0	
2462	11	0	
2467	12	0	
2472	13	0	-

Up to 22.03.5 it gave all the exptected info shown here https://openwrt.org/docs/guide-user/network/wifi/iwchan?rev=1694213842#examples

I only want to run iwchan.awk with the show option (i.e. no Wi-Fi automatic channel selection needed), but I do not have the skill to adjust it; maybe it doesn't work anymore because "deprecated in favor of the default ACS algorithm" (see https://openwrt.org/docs/guide-user/network/wifi/iwchan?do=revisions) which, for me, is even worse in terms of understanding... can you help me?

Thanks in advance.

2

The device name cannot be extracted correctly because of the hyphen.

Open iwchan.awk and find and replace

dev = gensub(/^\s*\w*\s(\w+)$/, "\\1", 1, $0)

with

dev = gensub(/^\s*\w*\s(\w+-?\w+)$/, "\\1", 1, $0)
2 Likes
3

Thank you so much: it works.

1 Like
4

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