Your code logic says that you want to find lines in '2.txt' that are NOT in '1.txt'.
thanks for all answerers. yeah,I have put less attention on that code,and have made a fatal logic error. but the way mentioned by John, putting file's all contents to a hash, maybe somewhat less efficiency when the file is large much.is it? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
