Filesystem Type Size Used Avail Use% Mounted on tmpfs tmpfs 1.2G 11M 1.2G 1% /run /dev/sdb1 iso9660 4.6G 4.6G 0 100% /cdrom /cow overlay 5.8G 483M 5.3G 9% / /dev/disk/by-label/writable ext4 2.8G 4.4M 2.7G 1% /var/log tmpfs tmpfs 5.8G 0 5.8G 0% /dev/shm tmpfs tmpfs 5.0M 8.0K 5.0M 1% /run/lock tmpfs tmpfs 5.8G 0 5.8G 0% /tmp tmpfs tmpfs 1.2G 144K 1.2G 1% /run/user/XXX