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disk_usage.md

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Check OSX/Linux Disk Usage

show disk statistics

df - Display Free disk space

$ df | less

Filesystem     512-blocks       Used Available Capacity iused      ifree %iused  Mounted on
/dev/disk1s2s1  500000000   30100528  84283120    27%  502068  421415600    0%   /
devfs                 393        393         0   100%     680          0  100%   /dev
/dev/disk1s5    500000000   37751352  84283120    31%      20  421415600    0%   /System/Volumes/VM
/dev/disk1s3    500000000    1664688  84283120     2%    5506  421415600    0%   /System/Volumes/Preboot
/dev/disk1s6    500000000       9456  84283120     1%      23  421415600    0%   /System/Volumes/Update
/dev/disk1s1    500000000  343730552  84283120    81% 2096587  421415600    0%   /System/Volumes/Data
/dev/disk2s1   1453595632 1066505080 386732136    74% 1873260 1933660680    0%   /Volumes/WORK
map auto_home           0          0         0   100%       0          0  100%   /System/Volumes/Data/home

Quick find largest files

$ ls -Sl  # -S means Sort by size

drwx------@  3 user  staff    96 Aug 13  2020 Applications
drwx------@ 11 user  staff   352 Oct 14 12:02 Desktop
drwx------@  5 user  staff   160 Oct  7 14:01 Documents
drwx------@ 24 user  staff   768 Oct 18 11:27 Downloads
drwx------@ 91 user  staff  2912 Oct 18 10:35 Library
drwx------+  5 user  staff   160 Aug  1 15:19 Movies
drwx------+  4 user  staff   128 Aug 13  2020 Music

dive in deep

du – display disk usage statistics

  • Display top 10 disk usage, in (1 MiB) blocks.
    • most useful to find the most disk-usage files
    • du -m <path> | sort -nr | head -n 10
    $ du -m .  | sort -nr | head -n 10                                                                                                                              130 ↵

64259	.
37771	./Library
13896	./Library/Developer
8527	./Library/Developer/CoreSimulator
7202	./Library/Containers
6767	./Library/Containers/com.tencent.xinWeChat/Data/Library
6767	./Library/Containers/com.tencent.xinWeChat/Data
6767	./Library/Containers/com.tencent.xinWeChat
  • some times you may just want the top level directory instead of levels 
    du -sm *  | sort -nr | head -n 10                                                                                                                             130 ↵

37769	Library
6191	VirtualBox VMs
5817	Downloads
3149	go
1008	nltk_data
39	volumes
4	Pictures
1	Music
1	Movies
1	Documents
  • display & sort by human-readable 
    $ du -h . | sort -hr | head -n 10