是的.谢谢哈
----- Original Message ----- From: "point" <[email protected]> To: "PerlChina Mongers 讨论组" <[email protected]> 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 $_ 转义的. > > On 11月12日, 上午8时36分, "Haiyan Lin" <[email protected]> wrote: >> 试了一下，得到下面的信息： >> >> [li...@localhost try]$ more lll >> lllll >> lllll >> skdfksdfas >> lllll >> skdfksdfas >> kkkk >> [li...@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" <[email protected]> >> To: <[email protected]> >> 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 <[email protected]>: >> >> >> 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" <[email protected]> >> >> To: "PerlChina Mongers 讨论组" <[email protected]> >> >> 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。 > > > --~--~---------~--~----~------------~-------~--~----~ 您收到此信息是由于您订阅了 Google 论坛“PerlChina Mongers 讨论组”论坛。 要在此论坛发帖，请发电子邮件到 [email protected] 要退订此论坛，请发邮件至 [email protected] 更多选项，请通过 http://groups.google.com/group/perlchina?hl=zh-CN 访问该论坛 -~----------~----~----~----~------~----~------~--~---
