centos 7.0 查看根目录下所有文件夹

[root@localhost ~]#
[root@localhost ~]# cd ../
[root@localhost /]# ls
bin dev home lib64 mnt proc run srv tmp var
boot etc lib media opt root sbin sys usr

[root@localhost /]# df
文件系统           1K-块   已用      可用 已用% 挂载点
/dev/sda3       51175000  52888  51122112    1% /
devtmpfs         1918536      0   1918536    0% /dev
tmpfs            1924208      0   1924208    0% /dev/shm
tmpfs            1924208 188344   1735864   10% /run
tmpfs            1924208      0   1924208    0% /sys/fs/cgroup
/dev/sda5       51175000 816060  50358940    2% /usr
/dev/sda8      102309060  32928 102276132    1% /home
/dev/sda6       30705000 230576  30474424    1% /var
/dev/sda2         508588  81632    426956   17% /boot