I’m possibly misunderstanding your situation, but it is still possible to do a free upgrade from Win 7 to Win 10 using legit Microsoft tools.
This method works as of about two weeks ago when I last did it.
Mods: the method uses the official MS Media Creation Tool and its automated interaction with Microsoft’s activation servers, so it isn’t a dodgy hack or anything. I guess that patching activation servers isn’t something that is done lightly, so it still works two years after the original Windows Update upgrade path went away.
I do this except it’s in my .tcshrc. (My first Unix shell was csh on a box running PDP-11 firmware emulation.) Another classic one is “cls” for “clear”.
But the oldest alias is “k/n” for “exit”. That was the shortcut for “kill /now” on TOPS-10.
I also used to do things under MS-DOS going the other way. E.g., I’d binedit the Doskey command so that the keys for moving on the command line mirrored csh and such.
(I just did a Google for “kill /now” TOPS. Based on the results I think I just made another list.)