in reply to df sometimes hangs in Win32 OS

I'd use fsutil on windows:

C:\test>fsutil volume diskfree .
Total # of free bytes        : 89573777408
Total # of bytes             : 627247673344
Total # of avail free bytes  :   89573777408

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Re^2: df sometimes hangs in Win32 OS
by Dandello (Monk) on Sep 22, 2012 at 21:42 UTC

    So, what I think is being said is that the script this is in needs an OS checker so it can load a Win32 specific utility to do the job?

    The script needs to be cross-platform. 95%+ of the installations are on *nix. Maybe 5% of the Win installs come up with this problem. So it's a pretty rare issue.

[reply]
      So, what I think is being said is that the script this is in needs an OS checker so it can load a Win32 specific utility to do the job?

      I have a df utility on my windows system -- part of the UnxUtils package though it segfaults on my 64-bit OS -- but generally most windows systems will not have it, and expecting users to find and install one is naive.

      Far simpler I think to use something like:

      sub freespace {
    if( $^O eq 'MSWin32' ) {
        `fsutil volume diskfree .` =~ m[avail free bytes  : (\d+)]; 
        return ( $1 // die $! ) / 1024;
    }
    elsif( $^O eq ... ) {
        ...
    }
    else {
        `df -k .` =~ m[...]; 
        return $1 // die $!
    }
}
...

my $free = freespace();

      [download]
      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.

      RIP Neil Armstrong
      div class=
[reply]
[d/l]

        Thank you - this is exactly what I need.

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