查看当前文件系统 df -lhT -B G

[root@ok-T test]# df -lhT -B G
Filesystem           Type  1G-blocks  Used Available Use% Mounted on
/dev/mapper/vg_okt-lv_root
                     ext4        50G    5G       43G   % /
tmpfs                tmpfs        2G    1G        2G   % /dev/shm
/dev/sda1            ext4         1G    1G        1G  % /boot
/dev/mapper/vg_okt-lv_home
                     ext4       405G    1G      385G   % /home
[root@ok-T test]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_okt-lv_root
                       50G  .1G   43G   % /
tmpfs                 .9G  240K  .9G   % /dev/shm
/dev/sda1             477M   42M  410M  % /boot
/dev/mapper/vg_okt-lv_home
                      405G  269M  385G   % /home