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10-13-2009
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sed 'iteration character' question
I'm processing ( trying to anyway ) a file of pipe delimited database output. Sample record: Code:
365026 | ocn424525329 | With his lightening-quick hands and feet The second field in the above data is "ocn424525329". It should be "424525329" with no trailing or leading spaces. This may be better approached with awk but while I try that I thought I'd ask something that's been bothering me about sed's iteration metacharacter: {n} or {n,m}. For example, suppose I want to replace this field with the word 'hello' ... Why can I not match this with: Code:
sed 's/ocn[0-9]{9}/hello/g' tmp
??? No matter what I try the {n} meta sequence does nothing. Bub ---------- Post updated at 07:02 PM ---------- Previous update was at 06:55 PM ---------- The following matches: Code:
sed 's/oc[nm][0-9]\{8,9\} /hello/g' tmp
So I have to escape the braces. When un-escaped, I assume that they are taken literally? thanks ~ Bub |
| Bits Awarded / Charged to Bubnoff for this Post | |||
| Date | User | Comment | Amount |
| 10-14-2009 | pludi | For not relying on us to solve your problem | 5,000 |
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