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1299.Text file parser -- How to extarct specified pattern by conditions?

User: Soly -- 2015-04-23          << 1298  1300 >>
Hits: 1041
Type: Text file parser   
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Description:
How to extarct by conditions?

only the value of MD is needed to be extracted. but if it doesn't exist, then extract the value of OD.
Input Sample:
File1
LD="AA"
MD="BB"
ND="CC"
OD="DD"

File2
LD="AA"
XD="BB"
ND="CC"
OD="DD"
Output Sample:
File1
BB

File2
DD
Answer:
Hint: You need to Download and install "Replace Pioneer" on windows platform to finish following steps.
1. ctrl-o open text file
2. ctrl-h open 'replace' dialogue
* set 'search for pattern' to:

* set 'replace with pattern' to:

* uncheck "print unmatched units" option
3. click 'replace', done.

Screenshot 1:  Replace_Window


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