$ df -h
Filesystem      Size  Used Avail Use% Mounted on
rootfs          7.3G  503M  6.8G   7% /
devtmpfs        7.3G     0  7.3G   0% /dev
tmpfs           7.4G     0  7.4G   0% /dev/shm
tmpfs           7.4G  9.2M  7.4G   1% /run
tmpfs           7.4G     0  7.4G   0% /sys/fs/cgroup
/dev/sda1        17G  7.5G  7.8G  50% /mnt/sda1