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