輸出md5加密後的值，用於匹配已知的簡單加密後的數值解密

#!/bin/sh

[ $# -eq 1 ]||{

  echo 'pls input a number'

  exit 1

}

test=$1

for n in `seq $(man bash|grep random -i | sed -n 2's/^.*0 and \([0-9]*\) is.*/\1/g'p)`

do

  num=`echo $n|md5sum|cut -c 1-10`

  [ "$num" == "$test" ]&&{

    echo "$n $test"

  }

done