Recursively getting the size of a directory

Question

Is there a good gem for getting recursively calculated directory sizes? In unix, I can use du, but I want a library that absorbs the difference among OS.

Related: http://stackoverflow.com/questions/3632074/what-is-the-fastest-way-to-calculate-disk-usage-per-customer — coreyward, Feb 20 '12 at 00:03
Related: http://stackoverflow.com/questions/4508692/get-available-diskspace-in-ruby — coreyward, Feb 20 '12 at 00:06

yegor256 · Answer 1 · 2017-06-25T12:15:46.370

5

This seems to work:

Dir.glob(File.join(dir, '**', '*'))
  .map{ |f| File.size(f) }
  .inject(:+)

edited Jun 25 '17 at 12:15

answered Mar 15 '17 at 06:31

yegor256

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I think you're actually just getting the length of the string with `(&:size)` there. What you want instead is `{ |file| File.size(file) }`. – Ryan Lue Jun 24 '17 at 08:25
1

Or use `sum` instead of `inject(:+)` (tested on Ruby 2.6.4) – builder-7000 Nov 13 '19 at 08:42

lloesche · Answer 2 · 2013-06-26T00:28:32.607

2

Could something like this work for you?

def directory_size(path)
  path << '/' unless path.end_with?('/')

  raise RuntimeError, "#{path} is not a directory" unless File.directory?(path)

  total_size = 0
  Dir["#{path}**/*"].each do |f|
    total_size += File.size(f) if File.file?(f) && File.size?(f)
  end
  total_size
end

puts directory_size '/etc'

edited Jun 26 '13 at 00:28

answered Jun 26 '13 at 00:22

lloesche

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score 2 · Answer 3 · edited Mar 02 '16 at 10:26

2

Here's my solution using http://ruby-doc.org/core-2.2.0/File.html#method-c-size:

def directory_size(path)
  size=0
  Dir.glob(File.join(path, '**', '*')) { |file| size+=File.size(file) }
  size
end

edited Mar 02 '16 at 10:26

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answered Jan 15 '16 at 10:07

seba

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score 1 · Accepted Answer · answered Feb 20 '12 at 00:06

1

Looks like sys-filesystem handles this, but you'll need to do some math to convert the available blocks into bytes (by multiplying by block-size).

answered Feb 20 '12 at 00:06

coreyward

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This may be due the long time passed since this answer, but the mentioned gem correctly determines the block size (and also size in bytes, cf. `bytes_{used,total,free}` only on a filesystem (=mount) level and does not seem to work to determine the size of a directory. – oliverguenther Jul 20 '15 at 14:06

score -2 · Answer 5 · edited Mar 02 '16 at 09:36

-2

Check out the File::Stat class (note that it does not calculate size of directory contents, it needs to be done manually).

file = File::Stat.new('.')
puts file.size

http://ruby-doc.org/core-1.9.3/File/Stat.html#method-i-size

edited Mar 02 '16 at 09:36

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answered Feb 20 '12 at 00:07

fullsailor

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I assume you were downvoted because this returns the size of the directory, but not the combined size of the contents of the directory. – d11wtq Feb 20 '12 at 05:55

score -3 · Answer 6 · answered Dec 31 '12 at 19:58

-3

Support Tools:

diruse /M %windir%
diruse /K /S %windir%
diruse /S %windir%
diruse /, %windir%

Microsoft ... system install CD

msiexec /i %cd:~0,2%\SUPPORT\TOOLS\SUPTOOLS.MSI /q addlocal=all

Sysinternals Suite Utilities:

du.exe -l 1 %windir%

Microsoft ...

Sysinternals Suite

answered Dec 31 '12 at 19:58

STTR

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It's not clear how this solves the issue. YOu'll need to explain – New Alexandria Mar 03 '16 at 23:12

Recursively getting the size of a directory

6 Answers6

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