$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1       30G  6.1G   24G  21% /
devtmpfs         30G   60K   30G   1% /dev
tmpfs            31G   32K   31G   1% /dev/shm
/dev/xvdb       394G  5.8G  388G   2% /export/hdb3