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java IO or Shell Script  RSS feed

Arjun Shastry
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One third party application writes data to log file .Data format is text. Log file(say orig.log) is created daily.Maximum size of log file is set to 1 GB.Requirement is to to write a program
1) Which will rename this log file(to say temp.log) and change some records as per requirement.
2)Program will append the entire contents of this log file to some other file(say-Processed.log).
3)Program will delete temp.log.
4)Program will be like scheduler-should be able to perform 1,2,3 at specific time interval like 15 minutes/1 Hr etc
Is java suitable for this? or Shell Script? any other option?
(all files,third party application and this program will be on same machine).

It is sorta covered in the JavaRanch Style Guide.
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