rm -f ketto.txt
rm -f nemketto.txt

lista=`cat pelda.txt |sort | uniq`
echo "szamok:" $lista

for i in $lista
do
	darab=`cat pelda.txt | grep -c $i`

if [ $darab == 2 ]
then
	echo $i "ketto"
	echo $i >> ketto.txt
else
	echo $i "nem ketto"
	echo $i >> nemketto.txt
fi

done

echo "ketto.txt:"
cat ketto.txt

echo "nemketto.txt:"
cat nemketto.txt