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#!/bin/bash
# (((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))
# 根据上面的正则表示式规则,生成合法的ip地址
# author: xiaowh00
# date: 20126-22
mkdir /home/xiaowh00/data/ -p > /dev/null 2>&1
> /home/xiaowh00/data/iplist
cd /home/xiaowh00/data/
creat_random()
{
rept=`expr $RANDOM % 3 + 1`
case $rept in
1 ) {
num1=`expr $RANDOM % 10`
echo -n "$num1" >> iplist
};;
2 ) {
num1=`expr $RANDOM % 10`
num2=`expr $RANDOM % 10`
echo -n "$num1$num2" >> iplist
};;
3 ) {
num1=`expr $RANDOM % 2 + 1`
if [ "$num1" -eq "1" ]
then
num2=`expr $RANDOM % 10`
num3=`expr $RANDOM % 10`
else
num2=`expr $RANDOM % 6`
case $num2 in
[0-4] ) num3=`expr $RANDOM % 10` ;;
5 ) num3=`expr $RANDOM % 6` ;;
esac
fi
echo -n "$num1$num2$num3" >> iplist
};;
esac
}
while [ ture ]
do
for((i=0;i<3;i++))
{
creat_random
echo -n "." >> iplist
}
creat_random
echo >> iplist
done |
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