#!/bin/sh

# Scan for associated nodes, add name & IP address, report transmission errors

# 01/09/04  Adjusted format to new version of iwlist

writeable="/var/log/"
signalfile=$writeable"temp1.txt"
ipfile=$writeable"temp2.txt"

# Get each MAC address and its corresponding signal levels...
# Remove the scan and mode lines
# Concatenate the two remaining lines into one
# Remove extraneous blanks and labels

iwlist wlan0 scan \
| grep -v completed \
| grep -v Managed \
| paste -s -d"\t\n" \
| cut --delim=" " --fields=15-50 \
| sed s/" Quality:"/" "/g \
| sed s/" Signal level:"/" "/g \
| sed s/" Noise level:"/" "/g \
| sort > $signalfile

# Make a list of mac addresses...
macs=$(cat $signalfile | cut --delim=" " --fields=1)

for mac in $macs 
do
# Get each MAC address's IP and name
  gethost $mac >> $ipfile
done

echo MAC Address....... Quality  Signal  Noise. IP Address....... Name

echo 
#    MAC1 MAC2    MAC2    Signal  IP
#                     Quality Noise   Name
join -1 1 -2 3 -o 2.3 1.2 1.3 1.5 2.1 2.2 $signalfile $ipfile \
| sed s/" "/"   "/g \
| sort -g -k 3.13,15

rm --force $signalfile $ipfile

errors