4

I have here 5GB zip file but I have no idea how to unzip that.

I tried:

7z x file.zip

Returns: Error: Can not open file as archive

jar xvf file.zip

Returns: jar: error opening file.zip for reading: Value too large for defined data type

unzip file.zip

Returns: 

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.
note:  file.zip may be a plain executable, not an archive
unzip:  cannot find zipfile directory in one of file.zip or
        file.zip.zip, and cannot find file.zip.ZIP, period.

The file does seem to be a zip archive:

$ file file.zip
file.zip: Zip archive data, at least v1.0 to extract

Any idea?

Thanks.

terdon
  • 100,812
pavel
  • 165
  • 1
  • 2
  • 8
  • The correct way to unzip a zip file is : unzip file.zip it looks like your zip file may be corrupted. Can you download it again and do a checksum to see if the file is ok? – LnxSlck Jul 20 '14 at 12:13
  • 2
    "note: file.zip may be a plain executable, not an archive" - what does file file.zip say? – steeldriver Jul 20 '14 at 12:15
  • @LnxSlck: how to do a checksum? I'm Ubuntu newbie, can you please help me? The other things I tried when unzip file.zip didn't work. – pavel Jul 20 '14 at 12:18
  • @steeldriver: file.zip: Zip archive data, at least v1.0 to extract – pavel Jul 20 '14 at 12:19
  • This has been answered before here: http://askubuntu.com/questions/54904/unzip-error-end-of-central-directory-signature-not-found – LnxSlck Jul 20 '14 at 12:25
  • @LnxSlck: this topic I've read before, but doesn't solve my problem. Archive isn't corrupt and it is .zip archive. I don't understand point 3, but it's full archove, not only a part. – pavel Jul 20 '14 at 12:31
  • @LnxSlck there's no answer there. The OP has already tried all the solutions suggested, they're right there in the question. – terdon Jul 20 '14 at 13:38
  • 1
    do you know who made it? Because... I would assume there might be a 2nd file (and more) to make up the complete file. – Rinzwind Jul 20 '14 at 15:19
  • Maybe this is file belongs to a serie of files for example 1 of 3 files. What file is it? Have you downloaded it from the internet? – LnxSlck Jul 20 '14 at 15:47
  • Done, I've just downloaded the zip file once again, and unzip works. First time, the file was probably corrupt, now everything is okay. – pavel Jul 20 '14 at 15:59

1 Answers1

2

The file does indeed appear to be a zip archive. I have no idea why you're getting this problem. It sounds like a limitation of unzip but that, again, is very unlikely. Anyway, one possible workaround is to use zcat instead. However, this will only work as expected if the compressed data is a single file, not a bunch of files and directories:

zcat file.zip > file.unzipped

The other option of course is that the file is either corrupt (you say it's not in your comment but give no evidence to support the claim) or part of a larger archive. Without more information about the file itself we can't help.

terdon
  • 100,812
  • it returns gzip: file.zip has more than one entry--rest ignored - in the archive, there are more files, not just one (if I understood well error message). – pavel Jul 20 '14 at 13:35
  • @panther yes, that makes sense. It was a long shot. Are you sure this is not just a single piece of a larger archive? Where did you get the file from? What makes you so sure it's not corrupt? – terdon Jul 20 '14 at 13:38
  • yes, I'm sure it's complete and not corrupt archive, because on Windows on the other computers in the past we opened similar files regularly (it's a partional backup of e-mail data). This zip file was created with the same bash script on server. – pavel Jul 20 '14 at 14:32
  • @panther that does not mean its not corrupted. Can you open this particular archive on Windows? A file can be corrupted when you transfer it between computers for example. Or when something changed while the archive was being created. – terdon Jul 20 '14 at 14:33
  • No, I have no chance to try to open this file on another computer :-( – pavel Jul 20 '14 at 14:52
  • I tried to download that once again from server and it works. There probably has to be any error during downloading the file first time. Now, unzip works fine. – pavel Jul 20 '14 at 15:58
  • @panther ah, there you go. Makes sense :) – terdon Jul 20 '14 at 16:03
  • I didn´t expect it can download incorrectly, and it was first time I tried to unzip that on Ubuntu. I´ve never have similar problem before, so I didn´t suppose the problem could be here :-). – pavel Jul 20 '14 at 16:05