Filesystem      Size  Used Avail Use% Mounted on
rootfs           46G   16G   28G  36% /
/dev/root        46G   16G   28G  36% /
tmpfs           3.8G  320K  3.8G   1% /run
cgroup_root      10M     0   10M   0% /sys/fs/cgroup
udev             10M     0   10M   0% /dev
tmpfs           3.8G     0  3.8G   0% /dev/shm
tmpfs           3.8G     0  3.8G   0% /var/tmp/portage