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it was straightforward except for the 4th pattern in table 5-1 of problem 5.18. name##pattern
> O="i am bad" > echo ${O##a} > i am bad but i am expecting > d (just d, since it is what's left after the longest front-anchored pattern has been removed)
easy chapter
i didn't get quite get $3.6 and will have to revisit it
i skipped 2.18 but did the rest of the questions.
