Filesystem Size Used Avail Use% Mounted on devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 4.0G 788K 3.9G 1% /dev/shm tmpfs 4.0G 1.4M 3.9G 1% /run tmpfs 4.0G 0 4.0G 0% /sys/fs/cgroup /dev/dm-0 864G 5.7G 857G 1% / tmpfs 4.0G 8.0K 4.0G 1% /tmp /dev/sdb1 410G 65M 410G 1% /boot tmpfs 799M 8.0K 799M 1% /run/user/XXX