Filesystem Type Size Used Avail Use% Mounted on dev devtmpfs 3.9G 0 3.9G 0% /dev run tmpfs 3.9G 1.4M 3.9G 1% /run /dev/sda1 ext4 20G 15G 4.2G 78% / tmpfs tmpfs 3.9G 191M 3.7G 5% /dev/shm tmpfs tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup tmpfs tmpfs 3.9G 54M 3.8G 2% /tmp /dev/sda2 ext4 4.0G 1.8G 2.1G 46% /opt /dev/sda3 ext4 197G 168G 28G 86% /home /dev/sdb4 ext4 1.8T 444G 1.4T 25% /mnt/XXXXX /dev/sdc ext4 3.6T 2.0T 1.5T 59% /mnt/XXXX tmpfs tmpfs 785M 144K 785M 1% /run/user/XXXX