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#!/bin/sh

count=0

iwlist scan ${1:-} 2>/dev/null | ( while read line;
do
    case "$line" in
        *"Cell "*)
            #echo
            : $((count+=1))
            echo MAC_${count}="${line#*Address: }"
            ;;
        *Channel:*)
            echo CHANNEL_${count}="${line#*:}"
            ;;
        *Quality=*)
            echo QUALITY_${count}="`printf '%s' ${line#*Quality=} | cut -d/  -f 1`"
            ;;
        *"Encryption key:"*)
            echo ENCRYPTION_${count}="${line#*key:}"
            ;;
        *ESSID:*)
            echo ESSID_${count}="${line#*ESSID:}"
            ;;
        *"IE: IEEE 802.11i/WPA2"*)
            echo WPA2_${count}=1
            ;;
        *"IE: WPA Version 1"*)
            echo WPA_${count}=1
            ;;
        *);;
    esac
done; echo WIFI_COUNT=$count)