This one, if by unix he also means modern linux systems. Nowadays you can simply use tar xf my-file.tar.whatever and it should work on most linux systems (it worked on every modern linux system I’ve tried and every compressed tar file I’ve tried). I don’t think it is hard to remember the xf part.
I’d like to know if there are any XKCDs that are no longer relevant.
I’d like to know if there’s an XKCD about an XKCD that’s no longer relevant.
There are some that were wrong to begin with, I remember 622 bothering me.
https://xkcd.com/622/
But it could also just be that in the comic, the professor is wrong.
This one, if by unix he also means modern linux systems. Nowadays you can simply use
tar xf my-file.tar.whateverand it should work on most linux systems (it worked on every modern linux system I’ve tried and every compressed tar file I’ve tried). I don’t think it is hard to remember thexfpart.