人家没有问 ping 了,而且用 ping 外部程序,还不如 nslookup 呢?:)

2009/8/11 cnhack TNT <[email protected]>

> 用 ping 这种简单的办法有什么不妥么?
>
>
> 2009/8/11 Beckheng Lam <[email protected]>
>
>  同意,我以前的是这样的:
>>
>> 如何对IP地址进行域名反向查询一样.
>> use Socket;
>> @addresses = gethostbyname($name) or die "Can't resolve $name: $!n";
>> @addresses = map { inet_ntoa($_) } @addresses[4 .. $#addresses];
>>
>> 反向查询
>> use Socket;
>> $name = gethostbyaddr(inet_aton($address), AF_INET) or die "Can't resolve
>> $address: $!n";
>>
>> Lin(林兴陆) wrote:
>>
>> perl -e "print join('.',unpack('C4',(gethostbyname('www.google.com'))[4]));"
>> ;
>>
>> 用unpack C4兼容性更好一点,W4似乎只在Windows下可解。
>>
>> 2009/8/11 Lin <[email protected]>
>>
>>> 这都什么跟什么啊... 大家不要误人子弟了啦
>>>
>>> C:\Users\Lin\Desktop>perl -e "print join('.',unpack('W4',(gethostbyname('
>>> www.goo
>>> gle.com'))[4]));";
>>> 66.249.89.147
>>>
>>> %perl -e 'use Socket;my $packed_ip = gethostbyname("
>>> www.google.com");print 
>>> <http://www.google.com%22%29;print/>inet_ntoa($packed_ip);' ;
>>> 64.233.189.147%
>>>
>>> 2009/8/10 Yuan Jiang <[email protected]>
>>>
>>>> http://blog.vetcafe.net/2009/07/perl_ping_dns.html
>>>>
>>>> 2009/8/10 cnhack TNT <[email protected]>
>>>>
>>>>> print $1 if qx/ping -c1 google.com/ =~ /\(([\d\.]+)\)/;
>>>>>
>>>>>  2009/8/10 imxae <[email protected]>
>>>>>
>>>>>> 在cpan 上搜来搜去,发现有的dns模块都太复杂了,不知道有没有比较方面的用perl把域名转换为ip的简单代码?
>>>>>
>>>>>
>>
>>
>>
>>
>> --
>> Perl乐事 -- http://www.perlersh.org
>> 我的博客 -- http://www.perlersh.org/blog.html
>>
>>
>>
>>
>
> >
>

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