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Please help with sed

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  #1  
Old June 25th, 2004, 10:48 AM
rgord1 rgord1 is offline
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Please help with sed
Hi,

I have an xml datafile that I need to edit. I assume sed is the best choice but would appreciate your help.

I have tried to use sed to edit this file to no avail. My problem is that I have to delete data from each row up to a <tag> and then after the </tag>

eg

Data-unless-information etc etc<TAG>Useful information in here</TAG>useless information after here

I need to return the data between <TAG> and </TAG>. Unfortunately the number of characters will differ so I couldn't use the simple 'delete first x characters of each line'.

I really, really need your help with this one!

Thanks
Rich
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  #2  
Old June 30th, 2004, 10:09 AM
jim mcnamara jim mcnamara is offline
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Code:
 cat oldfile | sed 's/^.*<tag>//' | sed 's/<\/tag>.*$//' > newfile
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rgord1 agrees!
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  #3  
Old July 12th, 2004, 11:18 AM
guggach guggach is offline
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not really:

sed -ne '/.*tag>/,/.*\/tag>/p' input | sed -e '/.*tag>/d' >output
sed, grep, lp .... can open files, no need of cat
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Old July 19th, 2004, 03:22 PM
mike_applebee mike_applebee is offline
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Variation but same question
Quote:
Originally Posted by rgord1
I have tried to use sed to edit this file to no avail. My problem is that I have to delete data from each row up to a <tag> and then after the </tag>
Data-unless-information etc etc<TAG>Useful information in here</TAG>useless information after here


I have similar question w/ a modification
Code:
Need this data here <start>
This is junk on line 2
</start> More good stuff

I can't seem to work the multiline issue out.
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  #5  
Old July 19th, 2004, 04:19 PM
jim mcnamara jim mcnamara is offline
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Try:
Code:
grep ">" myfile | sed -e 's/^.*<tag>//' -e 's/<\/tag>.*$//' > newfile
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