文件系统           1K-块      已用      可用 已用% 挂载点
/dev/loop0            20158332   5612400  13521932  30% /
none                   1020132       260   1019872   1% /dev
none                   1024856      1768   1023088   1% /dev/shm
none                   1024856        92   1024764   1% /var/run
none                   1024856         0   1024856   0% /var/lock
none                   1024856         0   1024856   0% /lib/init/rw
/dev/sda5             75267328  69735572   5531756  93% /host