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16 rivejä
207 B

#!/bin/bash
for i in {1..1000};
do
echo $RANDOM|md5sum|cut -c 1-9 ;
done >> data;
sort data|uniq;
sort -n data|uniq;
sort -n data|uniq > data1;
sort -n data|uniq >> data2;
grep -o "aa" data1|wc -l;