whether you just want the search (as gkpanathy suggests) or the more elaborate methods that Chris R is on about comes down to this:
Do you need to see the events, or do you need to see everything together, in the order it appears in the file.
The search view gives you all the data, it just presents it in the splunk ui. eg,
splunk> source=/var/log/something-or-other.log host=jrodman.example.com
If you really need to see the file ressembled as it was before, it gets fairly tricky with rolling logfiles to pin down exactly what you need. Perhaps the use case will clarify?
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