I (should better maintain) my little compendium of shell 'one liners' that do all sorts of incredibly useful things, that getting right first time, were hard won.

Having that handy you can seem like a god at times to your colleagues when they are trying to solve something. "Oh, did you know you can do this? I'll message it to you."

I think my working memory isn't very good, but there is something in there that is very good surely, because how else would I have been able to computers for this long?