[PerlChina] Re: 请教哈:将文件中重复的行,替换,只保留一行

是的.谢谢哈

----- Original Message -----
From: "point" <linuxty@gmail.com>
To: "PerlChina Mongers 讨论组" <perlchina@googlegroups.com>
Sent: Thursday, November 12, 2009 9:18 AM
Subject: [PerlChina] Re: 请教哈:将文件中重复的行,替换,只保留一行

>用 单引号.
> 双引号shell会把 $a 和 $_ 转义的.
>
> On 11月12日, 上午8时36分, "Haiyan Lin" <linhy0...@gmail.com> wrote:
>> 试了一下，得到下面的信息：
>>
>> [linhy@localhost try]$ more lll
>> lllll
>> lllll
>> skdfksdfas
>> lllll
>> skdfksdfas
>> kkkk
>> [linhy@localhost try]$ perl -nle "print unless $a{$_}++;" lll > ll
>> Can't modify anonymous hash ({}) in postincrement (++) at -e line 1, near
>> "}++"
>> Execution of -e aborted due to compilation errors.
>>
>> ----- Original Message -----
>> From: "Tiger Peng" <tigerpeng2...@gmail.com>
>> To: <perlchina@googlegroups.com>
>> Sent: Wednesday, November 11, 2009 11:20 PM
>> Subject: [PerlChina] Re: 请教哈:将文件中重复的行,替换,只保留一行
>>
>> > 试试：
>> > perl -nle 'print unless $a{$_}++' infile > outfile.
>> > 如果文件太大，要用很多memory。
>>
>> > 2009/11/11 Haiyan Lin <linhy0...@gmail.com>:
>>
>> >> 希望保留原顺利，对于重复行，只保留首次出席的那行
>>
>> >> ----- Original Message -----
>> >> From: "TBY" <tangbo...@hotmail.com>
>> >> To: "PerlChina Mongers 讨论组" <perlchina@googlegroups.com>
>> >> Sent: Wednesday, November 11, 2009 7:36 PM
>> >> Subject: [PerlChina] Re: 请教哈:将文件中重复的行,替换,只保留一行
>>
>> >>> 用hash有问题的吧，行顺序全打乱了要紧么？
>>
>> >>> 用uniq是最好的。
> >
>

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