CentOS - Mar 2010 - How can I access a ZIP file that's over 2Gb?

I have a zip file.  It is over 2Gb in size:

-rw-r--r-- 1 sweh sweh 2383956582 Mar 13 13:44 test.zip

The standard "unzip" program barfs:
  % unzip -l test.zip
  Archive:  test.zip
    End-of-central-directory signature not found.  Either this file is not
    a zipfile, or it constitutes one disk of a multi-part archive.  In the
    latter case the central directory and zipfile comment will be found on
    the last disk(s) of this archive.
  unzip:  cannot find zipfile directory in one of test.zip or
          test.zip.zip, and cannot find test.zip.ZIP, period.

This is because the info-zip utilities can't handle ZIP files over 2Gb in
size.

Windows can access it just fine.

Anyone have any recommendations on a unix tool that'll let me access these
large files?

-- 

rgds
Stephen

On Sat, 2010-03-13 at 18:53 -0500, Stephen Harris wrote:
> I have a zip file.  It is over 2Gb in size:
> 
> -rw-r--r-- 1 sweh sweh 2383956582 Mar 13 13:44 test.zip
> 
> The standard "unzip" program barfs:
>   % unzip -l test.zip
>   Archive:  test.zip
>     End-of-central-directory signature not found.  Either this file is not
>     a zipfile, or it constitutes one disk of a multi-part archive.  In the
>     latter case the central directory and zipfile comment will be found on
>     the last disk(s) of this archive.
>   unzip:  cannot find zipfile directory in one of test.zip or
>           test.zip.zip, and cannot find test.zip.ZIP, period.
> 
> This is because the info-zip utilities can't handle ZIP files over 2Gb
in
> size.
> 
> Windows can access it just fine.
> 
> Anyone have any recommendations on a unix tool that'll let me access
these
> large files?
----
out of curiousity... is this a 64 bit version of Windows and a 32 bit
version of Linux we are comparing?

Craig


-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

At Sat, 13 Mar 2010 18:53:49 -0500 CentOS mailing list <centos at
centos.org> wrote:
> 
> I have a zip file.  It is over 2Gb in size:
> 
> -rw-r--r-- 1 sweh sweh 2383956582 Mar 13 13:44 test.zip
> 
> The standard "unzip" program barfs:
>   % unzip -l test.zip
>   Archive:  test.zip
>     End-of-central-directory signature not found.  Either this file is not
>     a zipfile, or it constitutes one disk of a multi-part archive.  In the
>     latter case the central directory and zipfile comment will be found on
>     the last disk(s) of this archive.
>   unzip:  cannot find zipfile directory in one of test.zip or
>           test.zip.zip, and cannot find test.zip.ZIP, period.
> 
> This is because the info-zip utilities can't handle ZIP files over 2Gb
in
> size.
> 
> Windows can access it just fine.
> 
> Anyone have any recommendations on a unix tool that'll let me access
these
> large files?
Random thought (total guess): What happens if you use split on the zip
file and try to get info zip to think it is a multi-part archive?
> 
-- 
Robert Heller             -- 978-544-6933
Deepwoods Software        -- Download the Model Railroad System
http://www.deepsoft.com/  -- Binaries for Linux and MS-Windows
heller at deepsoft.com       -- http://www.deepsoft.com/ModelRailroadSystem/

On Sat, Mar 13, 2010 at 4:53 PM, Stephen Harris <lists at spuddy.org>
wrote:
> I have a zip file. ?It is over 2Gb in size:
>
> -rw-r--r-- 1 sweh sweh 2383956582 Mar 13 13:44 test.zip
>
> The standard "unzip" program barfs:
> ?% unzip -l test.zip
> ?Archive: ?test.zip
> ? ?End-of-central-directory signature not found. ?Either this file is not
> ? ?a zipfile, or it constitutes one disk of a multi-part archive. ?In the
> ? ?latter case the central directory and zipfile comment will be found on
> ? ?the last disk(s) of this archive.
> ?unzip: ?cannot find zipfile directory in one of test.zip or
> ? ? ? ? ?test.zip.zip, and cannot find test.zip.ZIP, period.
>
> This is because the info-zip utilities can't handle ZIP files over 2Gb
in
> size.
>
> Windows can access it just fine.
>
> Anyone have any recommendations on a unix tool that'll let me access
these
> large files?
>
My guess is that the code has not been updated to deal with large
fseeks. Looking at the FAQ at http://www.info-zip.org they know that a
file longer than 2 GB will have problems because of this.

http://www.info-zip.org/FAQ.html#limits

=>
While the only theoretical limit on the size of an archive is given by
(65,536 files x 4 GB each), realistically UnZip's random-access
operation and (partial) dependence on the stored compressed-size
values limits the total size to something in the neighborhood of 2 to
4 GB. This restriction may be relaxed in a future release. (On 64-bit
IRIX with the native compiler, the options "-mips4 -64" or
"-mips4 -64
-ipa" [for both compiling and linking] may help. "-ipa" is
reported to
generate incorrect code sometimes, however.)
<
My guess is that would affect things the most. My guess is that the
windows tools have code to deal with this and the unzip tool needs a
rewrite to match it.
-- 
Stephen J Smoogen.

Ah, but a man's reach should exceed his grasp. Or what's a heaven for?
-- Robert Browning