matelmaster writes: As a follow-up to their recent Linux Power Consumption review Phoronix published a short article comparing The power consumptions of Windows XP Sp2, Windows Vista, Fedora 8 Test 3 and Ubuntu 7.10. The test concludes that Ubuntu uses the most power while both idling and under normal usage, whereas Fedora and Windows XP seem to consume less.
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals