What is the best way to get diskspace information with ruby. I would prefer a pure ruby solution. If not possible (even with additional gems), it could also use any command available in a standard ubuntu desktop installation to parse the information into ruby.
Get available diskspace in ruby
under windows or linux? , if windows there is a Question for that #3259018 –
Otis
You could use the sys-filesystem gem (cross platform friendly)
require 'sys/filesystem'
stat = Sys::Filesystem.stat("/")
mb_available = stat.block_size * stat.blocks_available / 1024 / 1024
is there any way to get the total remaining size of root disk in ruby for Linux and Windows without using any gem? –
Monochromatic
How about simply:
spaceMb_i = `df -m /dev/sda1`.split(/\b/)[24].to_i
where '/dev/sda1' is the path, determined by simply running df
Didn't work for me for some reason (the split?) but this did
bytes_free = `df -B1 .`.split[10].to_i –
Littlest is there any way to get the total remaining size of root disk in ruby for Linux and Windows without using any gem? –
Monochromatic
(Ruby) Daniel Berger maintains a lot of gems in this field. To be found there: sys-cpu, sys-uptime, sys-uname, sys-proctable, sys-host, sys-admin, sys-filesystem. They are (AFAIK) multi-platform.
Hi i have created gem for that: https://github.com/pr0d1r2/free_disk_space
You can use it by:
gem 'free_disk_space' # add line to Gemfile
Inside code use methods:
FreeDiskSpace.terabytes('/')
FreeDiskSpace.gigabytes('/')
FreeDiskSpace.megabytes('/')
FreeDiskSpace.kilobytes('/')
FreeDiskSpace.bytes('/')
"While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes." –
Semester
gems not updated in 7 years are not helpfull –
Doited
The gem generates a class based on the current accepted response so it seems safe to use @fatfrog, or to copy that file to your project. –
Danieu
This is an extension to dkams answer which is not wrong, but calculated the complete space of ones drive, to check for the remaining usable .i.e. the FREE space on a drive substitute kdams secodn line with the following:
gb_available = stat.bytes_free / 1024 / 1024 / 1024
This will return the remaining free space on your drive in Gigs.
If it's in Gigs why call it mb_available then? –
Barsac
@Barsac that would be because of how the params are
1024 / 1024 / 1024 where it goes from byte, megabyte, gigabyte. Which seeing bytes_free should have been a dead give away. mb_available is because this is the standard way to display any amount of data unless of course its below 1 mb. Although with the params you have control of how you want it (KB, MB, GB). –
Undistinguished @Undistinguished If
bytes_free returns bytes (which it does), and then we divide it by 1024 three times we get: bytes -> kilobytes -> megabytes -> gigabytes. So @zachaysan's question is why the variable is named mb_available instead of the more accurate gb_available. –
Astute @Astute I'm confused now on how GB would be more accurate than a smaller more precise value? All he did was assign mb_available to total bytes / (divided by) 1024 to get the gigs available. The original question/answer had nothing to do with GB, idk why this one does...
Kilobyte (KB) 1,024 Bytes Megabyte (MB) 1,024 Kilobytes Starts in bytes: 1024 BYTES; 1024 KILOBYTES; 1024 MEGABYTES Where the resulting value would be less than needed to move up into 1024 GIGABYTES values. –
Undistinguished @Undistinguished I would expect a variable called
mb_available to contain a number that represents the number of megabytes available, and I would expect a variable called gb_available to contain a number that represents the number of gigabytes available. But in the answer above, we have "gigabytes available" stored in a variable which has a name that implies it's actually storing "megabytes available" - this is misleading and should be avoided. –
Astute Hi Guys, yes i made mistake, thank you, the var should be called gb_available. –
Outwards
is there any way to get the total remaining size of root disk in ruby for Linux and Windows without using any gem? –
Monochromatic
Similar to comment rogerdpack's comment to get the space free in GB / MB you may try following
# Get free space in Gb in present partition
gb_free = `df -BG .`.split[10].to_i
# Get free space in MB in /dev/sda1 partition
mb_free = `df -BM /dev/sda1`.split[10].to_i
puts gb_free, mb_free
What's the double asterisk (
**) about? –
Diamond This works only on a Linux system: If you don't mind calling out to the shell, you can use df for a filesystem and parse the output with a Regexp:
fs_to_check = '/boot'
df_output = `df #{fs_to_check}`
disk_line = df_output.split(/\n/)[1]
disk_free_bytes = disk_line.match(/(.+)\s+(\d+)\s+(\d+)\s+(\d+)\s+/)[4].to_i
disk_free_mbs = disk_free_bytes / 1024
puts(disk_free_mbs)
is there any way to get the total remaining size of root disk in ruby for Linux and Windows without using any gem? –
Monochromatic
def check_disk_space
system('df -H | grep debug > ff')
ss = File.open('ff').read.split(/\s+/)
system('rm ff')
"#{ss[3]}"
end
Used under ubuntu, to check debugs size，put the available size as output.
I believe this is more robust.
filesystem = "/dev/sda1"
free_megabytes = `LANG=C df -m #{filesystem}`.split("\n").map do |line|
line.split.first(4)
end.transpose.to_h["Available"]&.to_i
puts(free_megabytes)
My gem-free solution (linux only):
storage_info = `df -h | grep "sda1" -w`
# storage_info => "/dev/sda1 39G 27G 12G 70% /"
then depending on the exact info you may need (total space, used space, free space, used space in percentage) you could do:
free_space = storage_info.split(" ")[3]
# free_space => "12G"
A gem free solution, answer in bytes:
(File.exists?('C:\\') ? `dir /-C`.match(/(\d+) bytes free/) : `df .`.match(/(\d+)\s*\d*%/)).captures[0].to_i
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