From: Edwin van Leeuwen <edder@...>
Date: 2006-01-25T03:54:54+09:00
Subject: Re: Disk Free Space

Mickael Faivre-Macon wrote:
> Hi,
> 
> Is a way to know free disk space left other that using Win32 API or a
> system call on linux ?
> 
> Mickael.

A way to directly make the correct system call from ruby:
size = 64
unpack_fmt = 'iiiiiiiiiiiiiiii'
foo = ' ' * size
syscall(99, "/mountpoint", foo)
type, @bsize, @blocks, @bfree, @bavail, @files, @ffree, tmp,tmp,@namelen 
= foo.unpack(unpack_fmt)
usage=100*(@blocks-@bfree)/@blocks

(Copied from someone who wrote a ruby script that did the same thing as 
df.)

Edwin

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