This just cries for MySQL's fulltext search, but I suppose you won't be allowed to do that.
How big is the file? If it's small enough (less than a megabyte, say), you could just slurp it in, make each whole record into a single array element, and simply search over
them with
@hits=grep(/$term/,@directory);
And if it's more than a megabyte, do it with MySQL and just don't tell them :-)
Update:Aagh, what was I thinking - of course there is no need to slurp the whole file into memory - unless you wanted to make a search server :-)
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