In prior versions, I would open Nautilus and check the statusbar, which would tell me how much free space there is. Now, the statusbar isn't shown by default. I know you can enable it from the View menu, but 99% of users won't do that (and I'd rather not do that, if possible). So, is there some new recommended way to keep tabs on hard drive usage? Or is there maybe some other method that I should have been using in the past but never noticed?
sudo apt-get install dconf-tools) you can enable the default behavior of the status bar.
Type this on your terminal to enable the status bar by default
gsettings set org.gnome.nautilus.window-state start-with-status-bar true
Type this on your terminal to disable the status bar by default
gsettings set org.gnome.nautilus.window-state start-with-status-bar false
You can try this extension
Tested on Gnome 3.38