每天一命令（15）df - report file system disk space usage

df - report file system disk space usage 导出文件系统磁盘使用情况

root@nginx02  ~
# man df

root@nginx02  ~
# df -a
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/sda3        7406992 1819636   5204432  26% /
proc                   0       0         0    - /proc
sysfs                  0       0         0    - /sys
devpts                 0       0         0    - /dev/pts
tmpfs             249084       0    249084   0% /dev/shm
/dev/sda1         194241   36012    147989  20% /boot
none                   0       0         0    - /proc/sys/fs/binfmt_misc

root@nginx02  ~
# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       7.1G  1.8G  5.0G  26% /
tmpfs           244M     0  244M   0% /dev/shm
/dev/sda1       190M   36M  145M  20% /boot

root@nginx02  ~
# df -ah
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       7.1G  1.8G  5.0G  26% /
proc               0     0     0    - /proc
sysfs              0     0     0    - /sys
devpts             0     0     0    - /dev/pts
tmpfs           244M     0  244M   0% /dev/shm
/dev/sda1       190M   36M  145M  20% /boot
none               0     0     0    - /proc/sys/fs/binfmt_misc