treats@bubbles:/$ cd /
treats@bubbles:/$ sudo du -h --max-depth=1
du: cannot access ‘./run/user/1000/gvfs’: Permission denied
1.7M	./run
4.1G	./usr
du: cannot access ‘./proc/3491/task/3491/fd/4’: No such file or directory
du: cannot access ‘./proc/3491/task/3491/fdinfo/4’: No such file or directory
du: cannot access ‘./proc/3491/fd/4’: No such file or directory
du: cannot access ‘./proc/3491/fdinfo/4’: No such file or directory
0	./proc
155M	./etc
108M	./opt
4.0K	./lib64
4.0K	./cdrom
16K	./lost+found
3.6G	./var
28K	./media
9.7M	./bin
4.0K	./dev
12M	./sbin
3.0G	./home
844M	./lib
7.0M	./root
36K	./tmp
44K	./ubiquity-apt-clone
8.0K	./srv
174M	./boot
0	./sys
4.0K	./mnt
12G	.