peterd@xxx:/$ sudo du -l --max-depth=1
0   ./sys
104268  ./boot
32  ./tmp
6612    ./etc
83196   ./run
0   ./dev
16  ./lost+found
21033616    ./var
631768  ./lib
1000052 ./usr
4   ./lib64
8   ./media
48  ./home
16040   ./bin
4   ./mnt
13312   ./sbin
4   ./snap
du: cannot access './proc/8283/task/8283/fd/4': No such file or directory
du: cannot access './proc/8283/task/8283/fdinfo/4': No such file or directory
du: cannot access './proc/8283/fd/3': No such file or directory
du: cannot access './proc/8283/fdinfo/3': No such file or directory
0   ./proc
4   ./opt
20  ./root
4   ./srv
22889012