Re: programs

[Matthew Woehlke]

Juhapekka Tolvanen wrote:
> On Thu, 31 Dec 2009, +14:51:44 EET (UTC +0200),
> Eric Blake pressed some keys:
>
> > According to Juhapekka Tolvanen on 12/30/2009 4:35 PM:
> > > I wanted to do this: Give sizes of each files and directories located
> > > in $PWD in human-readable-format AND sort output according to sizes of
> > > those files and directories.
> >
> > What's wrong with:
> >
> > du -sh0 * | sort -hz | tr '\0' '\n'
> >
> > besides needing coreutils 7.5 or newer?
>
> What if size of one directory is rounded UP to 1M and size of other
> directory is rounded DOWN to 1M? How sort-command can know know, which
> one is bigger? I am sure, that sorting must be done according to size
> in bytes, not according to size of human-readable units.

Okay. What is wrong with:

du -B 1 -s -0 * \
  | sort -nz \
  | awk -v RS='\0' '{print $2}' \
  | xargs -d '\0' du -sh

?

Incidentally, instead of re-executing 'du' via xargs, I do this:

awk -v RS='\0' '{
  if ( $1 > 0x3F000000 )
    printf "%6.1fG\t", $1 / 0x40000000 ;
  else if ( $1 > 0xF0000 )
    printf "%6.1fM\t", $1 / 0x100000 ;
  else if ( $1 > 0x300 )
    printf "%6.1fK\t", $1 / 0x400 ;
  else
    printf "%6i\t", $1 ;
  $1="" ;
  print $0 ;
}'

...which has the advantage of being able to cope with a 'du -c' line 
(not to mention better alignment and less disk I/O).

--
Matthew
Please do not quote my e-mail address unobfuscated in message bodies.
--
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