[root@localhost /]# df -hl文件系统                 容量  已用  可用 已用% 挂载点/dev/mapper/centos-root   18G  855M   17G    5% /devtmpfs                 479M     0  479M    0% /devtmpfs                    489M     0  489M    0% /dev/shmtmpfs                    489M  6.7M  483M    2% /runtmpfs                    489M     0  489M    0% /sys/fs/cgroup/dev/sda1                497M  140M  358M   29% /boottmpfs                     98M     0   98M    0% /run/user/0[root@localhost /]#