I was trying to follow some instructions to set up a lineage OS build package on my latest version of Lubuntu PC. Everything was going ok until I got to a step that says now set up your directories for your build environment. To create them:

mkdir -p ~/bin
mkdir -p ~/android/lineage

so I enter them in the terminal window at the line that says root@PC:/home/user/# and then nothing happens... no confirmation or error and the same root... line reappears. which is normal i believe.

if I put in the command ls in the /home/user i dont see anything there by those names. If i check the higher directories nothing there either until I get to / where I find bin but as it is full of stuff I doubt I created that.

but when I enter the CD command by itself i get ~# then if i enter ls I immediately see android bin home.

But of course I dont understand where that is found?

Can anyone explain what I misunderstand here please and what I should do? Many thanks

George