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01-02-2009
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Back Referencing in SED
Hi,
I have tried all examples of back referencing from the web but all in vain. It would be heavily helpful if someone explains me the use of back referencing and sub expression using an example of substitution. Thanks |
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01-02-2009
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Hi,
Code:
sed 's/a\(..\)a/\1/' <<< "abba" Code:
bb Everything between \(\) is saved and can be refereced with \1 to \9 for each \(\). HTH Chris |
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