Project 001 : WLAN signal quality - continuous measurement

#!/bin/bash

test "$USER" != 'root' && { echo 'Starte bitte das Script als root.' ; exit ; }

echo '^ Datum      ^ MAC               ^ Ch. ^ Qual. ^ Pw ^ Cr ^ SSID ^' >> wlan-time-note.dat
datum=`date +%s`
iwlist wlan0 scan \
 | grep -B5 'ESSID' \
 | paste -s -d' ' \
 | sed 's/--/\n/g; s/key:on/key:1/g;s/key:off/key:0/g' \
 | sed 's/^.*\(Cell\).*Address: \([^ ]*\).*Channel:\([0-9][0-9]*\).*Quality=\([0-9][0-9]*\)\/.*level=-\([0-9][0-9]*\).*key:\([01]\).*ESSID:\("[^"]*"\).*$/| \1 | \2 | \3 | \4 | \5 | \6 | \7 |/' \
 | sed "s/^| Cell |/| ${datum} |/"  >> wlan-time-note.dat

#!/bin/bash

echo 'Finde alle uniq-en MACs ...'
grep '^|' wlan-time-note.dat | cut -f3 -d'|' | tr -d ' ' | sort | uniq > tmp-macs.tmp


echo 'Plot ...'
cat > tmp-plot.plt <<-EOF
	#set xdata
	#set xtics format "%d.%m %H:%M"
	splot 1/0 notitle, \\
	EOF


echo 'Select MAC ...'
lfd=0;
for mac in `cat tmp-macs.tmp`
do
  grep '^|' wlan-time-note.dat | grep "| ${mac} |" | cut -f2,4,5,8 -d '|' | tr -d '|' > tmp-mac-$lfd.dat

  key=`head -n1 tmp-mac-$lfd.dat | cut -f2 -d'"'`
  echo " 'tmp-mac-$lfd.dat' u 1:2:3 title '${key}' w l, \\" >> tmp-plot.plt

  lfd=$(( $lfd + 1 ))
done


echo 'Post...'
echo ' 1/0 notitle;' >> tmp-plot.plt
echo 'pause -1' >> tmp-plot.plt


echo 'Gnuplot ...'
gnuplot tmp-plot.plt


echo 'Aufräumen ...'
rm tmp*

#!/bin/bash

echo 'Finde alle WLANs ...'
grep '^| ' wlan-time-note.dat | cut -f8 -d '|' | sort | uniq | sed 's/^ "//g;s/" $//g;' | nl


echo 'Preplots ...'
cat > tmp-plot.plt <<-EOF
	set xrange[*:*]
	unset key
	EOF

echo 'Wer ist ...'
for SSID in   Benedicts_iPhone   Gruni   iPhone   Victorias_iPhone
do
  echo "  ... $SSID ?"
  ssid=`echo "$SSID" | tr '_' ' '`
  grep   "| \"${ssid}\" |"   wlan-time-note.dat > tmp-wlan.dat

  for mac in `cut -f3 -d'|' tmp-wlan.dat | sort | uniq`
  do
    echo "set title '$SSID'"                       >> tmp-plot.plt
    echo "plot 'tmp-${mac}.dat' u 1:4 w p pt 6;"   >> tmp-plot.plt
    echo "pause -1"                                >> tmp-plot.plt
    grep "| ${mac} |" tmp-wlan.dat | cut -f1-5,8 -d'|' | tr -d '|' > tmp-${mac}.dat
  done
done

gnuplot tmp-plot.plt
rm tmp*


#echo 'Finde alle MACs ...'
#grep '^| ' wlan-time-note.dat | cut -f3 -d '|' | sort | uniq