$ cat 1.txt | sort -t . -n -k 1,4
1.1.1.1
192.168.2.234
192.168.2.237
192.168.2.246
192.168.2.247
192.168.2.28
192.168.2.50
192.168.2.51
192.168.4.192
192.168.4.51
255.1.1.1


2009/5/12 Dongsheng Song <[email protected]>:
> 你们没有考虑第三个,第二个,甚至是第一个字段呢:
>
> $ sort -n -t \. -k4 ip.txt
> 192.168.2.28
> 192.168.2.50
> 192.168.2.51
> 192.168.4.51
> 192.168.4.192
> 192.168.2.234
> 192.168.2.237
> 192.168.2.246
> 192.168.2.247
>
> 2009/5/12 Alyex Ye <[email protected]>:
>> 用这个
>> sort -n -t \. -k4 ip.txt
>>
>> 在man sort中:
>>       -k, --key=POS1[,POS2]
>>              start a key at POS1, end it at POS2 (origin 1)
>>
>



-- 
Best Regards
LI Daobing


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