A post instructs me to post the results of a terminal command, but when I try to add a comment I'm stopped by a 50 reputation requirement. Not a very welcome introduction.
Please see https://apple.stackexchange.com/help/privileges/comment to understand how the comment system works. You can always comment on your own posts though, so if you are asked to clarify something on your own question or answer you can always do so.
To improve existing questions or answers it is also possible to edit those posts directly (there is an "edit" link beneath every post for this).