Setting up 5.1 or 7.1 speakers. Last time I tried it you had to edit the ALSA config, and that required learning ALSA's owning scripting language
Like I've said before, it's been a while since you used Linux aint it.
It's a been a dropdown option in pulse audio for 15+ or so years
But that's just one example. Every time I've used Linux it's been far more productive to use the command line, from everything to setting up NICs to installing drivers.
I've not had to drop to the shell for drivers since the late 90s early 2000s.
Drivers are in the kernel for 99% of the hardware so loaded upon install/ boot
All the "How-To"s on the internet are/were about dropping into the shell and typing this that or the other.
Agreed with this, A lot of the how too's are done from experienced people and thus done via the shell for speed as the mass of different DE's/Distros makes it easier to use the shell.