1. df 查看磁盘空间大小

df -h可以把内存大小单位换算为G

  1. df -h
  2. Filesystem      Size   Used  Avail Capacity iused      ifree %iused  Mounted on
  3. /dev/disk1s1   466Gi   10Gi  365Gi     3%  488466 4881964414    0%   /
  4. devfs          188Ki  188Ki    0Bi   100%     651          0  100%   /dev
  5. /dev/disk1s2   466Gi   85Gi  365Gi    19% 1605171 4880847709    0%   /System/Volumes/Data
  6. /dev/disk1s5   466Gi  5.0Gi  365Gi     2%       5 4882452875    0%   /private/var/vm
  7. map auto_home    0Bi    0Bi    0Bi   100%       0          0  100%   /System/Volumes/Data/home

df -h .需要查看的目录

2. du 查看该文件夹的空间占用大小

du是disk usage。要在当前目录下使用，意思就是你要查看什么文件夹就在什么文件夹上输入命令。du会展示各个目录下的占用情况，最后再给出一个总的占用情况.
同理，-h转化为更可读的模式.
用法：du -h 目录名

  1. $ du -h logs
  2.  84K    logs/springboot
  3.   0B    logs/storm/blobs
  4.   0B    logs/storm/nimbus/inbox
  5.   0B    logs/storm/nimbus/history
  6.   0B    logs/storm/nimbus
  7.   0B    logs/storm/supervisor/localstate
  8.   0B    logs/storm/supervisor/tmp
  9. 4.0K    logs/storm/supervisor/isupervisor
  10. 4.0K    logs/storm/supervisor
  11. 4.0K    logs/storm
  12.  88K    logs