root@hinas:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 458M 0 458M 0% /dev
tmpfs 100M 14M 86M 14% /run
/dev/mmcblk1p2 6.9G 6.9G 0 100% /
tmpfs 496M 0 496M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 496M 0 496M 0% /sys/fs/cgroup
tmpfs 496M 4.0K 496M 1% /tmp
/dev/mmcblk1p1 200M 47M 154M 24% /boot
/dev/sda1 57G 12G 43G 21% /mnt/sda1
tmpfs 100M 0 100M 0% /run/user/0
mmcblk1p2占用100% 这个要怎么删除啊？不想重刷
