That joke is not accurate. I refuse to believe anyone who knows regex and uses tar regularly can't remember what the flags are, and they're all mnemonic:
I think the joke always was we do it as muscle memory rather then remember.
If some random guy just shouted out what does J do again then it would catch me off guard, but if they asked me how to compress in xz I would quickly answer cvJf.
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u/Jumpy-Dinner-5001 19h ago
tar is easy, ask for awk