Re: Grep help
This WebDNA talk-list message is from 2004
It keeps the original formatting.
numero = 58773
interpreted = N
texte = Patrick McCormick wrote: > How do I save part of a string with grep? By capturing the text you want to save using parentheses, then using references in the replace term. > > I want the state and the zip chunks to remain intact, but only replace > the space between them with a tab. Is Grep capable of that by itself? You want to get a book on regular expressions; O'Reilly's "Mastering Regular Expressions" is the best I am aware of. Your data includes embedded spaces (i.e "SPRING VALLEY") so your regex has to be somewhat more complicated because of that. I think this might do what you want: search=([A-Z ]+) +([A-Z][A-Z]) ([0-9]+)$ replace=\1\t\2\t\3 (obviously that has to be put into WebDNA [grep] form). That regex works like this: ([A-Z ]+) = match 1 or more letters plus embedded space + = followed by 2 or more spaces ([A-Z][A-Z]) = match exactly 2 letters = followed by 1 space ([0-9]+) = match 1 or more numbers HTH John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4501 Forbes Boulevard Suite H Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5748 ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Patrick McCormick wrote: > How do I save part of a string with grep? By capturing the text you want to save using parentheses, then using references in the replace term. > > I want the state and the zip chunks to remain intact, but only replace > the space between them with a tab. Is Grep capable of that by itself? You want to get a book on regular expressions; O'Reilly's "Mastering Regular Expressions" is the best I am aware of. Your data includes embedded spaces (i.e "SPRING VALLEY") so your regex has to be somewhat more complicated because of that. I think this might do what you want: search=([A-Z ]+) +([A-Z][A-Z]) ([0-9]+)$ replace=\1\t\2\t\3 (obviously that has to be put into WebDNA [grep] form). That regex works like this: ([A-Z ]+) = match 1 or more letters plus embedded space + = followed by 2 or more spaces ([A-Z][A-Z]) = match exactly 2 letters = followed by 1 space ([0-9]+) = match 1 or more numbers HTH John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4501 Forbes Boulevard Suite H Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5748 ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
John Peacock
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