xrandr. afaik, there’s no (standard) way to set display resolution from the command line in wayland. also, there’s no equivalent of xkill, so in order to kill an unresponsive gui app, you have to grep for its pid in ps, which can get a bit tedious and annoying, especially for programs which spawn multiple processes.

Who even has cable or satellite anymore?

you say this as if it’s a good thing

A QA tester walks into a bar,
orders a beer,
orders 2 beers,
orders 0 beers,
orders 4294967296 beers,
orders -1/12 beers,
orders HGdIhFNPiHPWUDmUfWIFi beers,
orders a zebra

First real customer walks in,
asks where the bathroom is,
the whole bar catches on fire

first they had machine code
then they wrote the assembler in machine code
then they rewrote the assembler in assembly
and assembled it with the machine code assembler
then they wrote the C compiler in assembly
and assembled it with the assembly assembler
then they rewrote the C compiler in C
and compiled it with the assembly C compiler
then they had the C compiler
and everything else was written in C

(note: this is a massive oversimplification and ignores much of the history of programming languages, but it at least gets across the idea of how bootstrapping is done)