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#!/bin/rc
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# usb/probe [-h] - list all usb devices, including hubs
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rfork e
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test -e /dev/usb || bind -a '#u' /dev || {
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	echo no '#u/usb' >[1=2]
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	exit nousb
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}
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filter = cat
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if (~ $1 -h)
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	filter = (grep -v ' (root)?hub ')
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awk 'BEGIN	{ ep = "" }
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$1 ~ /ep[0-9]+\.0/ && $2 == "enabled" && $NF ~ /busy|idle/ {
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	ep=$1
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	next
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}
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{
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	if(ep != ""){
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		printf "%s %s\n", ep, $0
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		ep = ""
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	}
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}
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' /dev/usb/ctl | $filter
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exit ''