Asked a question, please help, thank you I have a document (rather, eight more than 10 million firms) 11：22：33 ：33：22 44：555：77 5555：11：7777 It put a box of how to use awk deleted Bank Asked a question, please help, thank you File Format : 11：22 ：33 ：33 ：22 44：555 ：77 444： ：44 Aa 4 : : Asked a question, please help, thank you Airspace or jurisdictions is contained box? Asked a question, please help, thank you Includes box domain Asked a question, please help, thank you We help out right. Asked a question, please help, thank you [code]awk F : 'index ($ 0, "") ==0' filename[/code] Asked a question, please help, thank you Awk-F : 'index ($ 0, "") ==0' filename The index ($ 0, "") 1. Double quotation marks? 2. What is the meaning of words Asked a question, please help, thank you --> According to your request does not include the printed ballots, the trip! --> Asked a question, please help, thank you I might say that the problems do not understand the actual document also contains figures out of the box So, how do I do Asked a question, please help, thank you I now have the means to make the two ":" The number of middle - and no characters (except ballots) and removed. Asked a question, please help, thank you [code]awk F : 'index ($ 0 ": :") ==0' filename[/code] Asked a question, please help, thank you Grep was OK. Grep-V ": :" The file Asked a question, please help, thank you He is the angle of the text, so. . . . : : Asked a question, please help, thank you Guangzhou Trade Fair is the result? : : : Oops : [code]cat A file|tr-d '' |grep-V ': M-#M- :' |tr-d '$#M-' |grep-V ': :' 11:22:33 :33:22 44:555:77 [/code] [ Closed window ]