Linux基本命令学习(二)

• df

Linux df命令用于显示目前在Linux系统上的文件系统的磁盘使用情况统计。

• 示例

1、直接使用df，显示文件系统的磁盘使用情况统计

$ df
Filesystem    512-blocks      Used Available Capacity iused               ifree %iused  Mounted on
/dev/disk1s1   236568496 102939576 126007032    45%  860944 9223372036853914863    0%   /
devfs                368       368         0   100%     638                   0  100%   /dev
/dev/disk1s4   236568496   6291496 126007032     5%       4 9223372036854775803    0%   /private/var/vm
map -hosts             0         0         0   100%       0                   0  100%   /net
map auto_home          0         0         0   100%       0                   0  100%   /home
BJHLdeMacBook-Pro-10:Downloads bjhl$ 

 

2、查看当前目录底下所有的具有 0 Blocks 的文件系统

$ df -a
Filesystem     Size   Used  Avail Capacity iused               ifree %iused  Mounted on
/dev/disk1s1  113Gi   49Gi   60Gi    45%  859857 9223372036853915950    0%   /
BJHLdeMacBook-Pro-10:Downloads bjhl$ df -i ideaIU-2019.1.3.dmg 
Filesystem   512-blocks      Used Available Capacity iused               ifree %iused  Mounted on
/dev/disk1s1  236568496 102739016 126207592    45%  859857 9223372036853915950    0%   /
BJHLdeMacBook-Pro-10:Downloads bjhl$ df -a
Filesystem    512-blocks      Used Available Capacity iused               ifree %iused  Mounted on
/dev/disk1s1   236568496 102795848 126150760    45%  860464 9223372036853915343    0%   /
devfs                368       368         0   100%     638                   0  100%   /dev
/dev/disk1s4   236568496   6291496 126150760     5%       4 9223372036854775803    0%   /private/var/vm
map -hosts             0         0         0   100%       0                   0  100%   /net
map auto_home          0         0         0   100%       0                   0  100%   /home

3、查看某个文件的磁盘属性，语法：df -h 文件名   或  df  -a  文件名，不同的参数，有不同的空间大小单位：

$ df -h ideaIU-2019.1.3.dmg 
Filesystem     Size   Used  Avail Capacity iused               ifree %iused  Mounted on
/dev/disk1s1  113Gi   49Gi   60Gi    45%  860576 9223372036853915231    0%   /


$ df -a ideaIU-2019.1.3.dmg 
Filesystem   512-blocks      Used Available Capacity iused               ifree %iused  Mounted on
/dev/disk1s1  236568496 102941840 126004768    45%  861029 9223372036853914778    0%   /