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Re^4: Matching lines in 2+ GB logfiles.

by samtregar (Abbot)
on May 01, 2008 at 18:24 UTC ( #683985=note: print w/replies, xml ) Need Help??


in reply to Re^3: Matching lines in 2+ GB logfiles.
in thread Matching lines in 2+ GB logfiles.

Perl's regular expression engine may be powerful but it doesn't yet use an "infinite" state machine! I think the terms you're looking for are NFA (Nondeterministic Finite Automaton, like Perl) and DFA (Deterministic Finite Automaton, like egrep, sometimes, it's actually a hybrid).

-sam

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Re^5: Matching lines in 2+ GB logfiles.
by mscharrer (Hermit) on May 01, 2008 at 18:35 UTC
    Yes, you are right, that was exactly what I meant. I confused some terms here. Thanks for pointing this out.

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