07-10-2009
sure
cat dumps entire file to output
| is a pipe to push into another application's stdin
grep -i -e
-i removes case
-e "string to search for"
I pipe it into another instance of grep to search for the second string, this will make sure all lines output have both instances inside of it. As far as i know, grep doesn't use an internal field separator, so use perl,python or even c if you want something faster then awk.
The perl script I gave you should work with little modification to what you acctually want. I made that in reguards to what I thought you needed.
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