Help with Grep

[Ed Lawson]

My son who is working at an unamed, but major health care institution in boston has a desparate
need to extract all instances of the following four text strings in a 6 meg file:

po=
to=
delay=
dsn=4

It is an urgent issue as the SQL slammer just got into their internal net and the instituion is down hard.

He was thinking he should be able to use grep, but not sure how to do it and I can't come up with a quick answer at work. Can anyone provide a quick script/command to do this. I assume perl would be another option.
Many thanks.

Ed Lawson

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