in reply to Re^6: [OT] Tar file with non-identical duplicate files and no paths?(A solution)
in thread [OT] Tar file with non-identical duplicate files and no paths?

Heh! We take every chance to blame that we can :)

So I looked into it -- the file is strange. It does read fine in *nix land though (I have FreeBSD on a virtual machine). You may be interested in the list of files:
$ tar tvf DBD-Pg-2.10.0-Perl5.8.tar 
-rw-rw-rw-  0 unknown unknown     0 Aug 27 10:45 blib/arch/.exists
-rw-rw-rw-  0 unknown unknown     0 Aug 27 10:45 blib/arch/auto/DBD/Pg
+/.exists
-rw-rw-rw-  0 unknown unknown     0 Aug 27 10:45 blib/arch/auto/DBD/Pg
+/Pg.bs
-rw-rw-rw-  0 unknown unknown 233472 Aug 27 10:45 blib/arch/auto/DBD/P
+g/Pg.dll
-rw-rw-rw-  0 unknown unknown    380 Aug 27 10:45 blib/arch/auto/DBD/P
+g/Pg.dll.manifest
-rw-rw-rw-  0 unknown unknown    743 Aug 27 10:45 blib/arch/auto/DBD/P
+g/Pg.exp
-rw-rw-rw-  0 unknown unknown   1854 Aug 27 10:45 blib/arch/auto/DBD/P
+g/Pg.lib
-rw-rw-rw-  0 unknown unknown 568320 Aug 27 10:45 blib/arch/auto/DBD/P
+g/Pg.pdb
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/arch/auto/DBD/P
+g
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/arch/auto/DBD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/arch/auto
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/arch
-rw-rw-rw-  0 unknown unknown      0 Aug 27 10:45 blib/bin/.exists
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/bin
-rw-rw-rw-  0 unknown unknown   2040 Aug 27 10:46 blib/html/site/lib/B
+undle/DBD/Pg.html
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:46 blib/html/site/lib/B
+undle/DBD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/html/site/lib/B
+undle
-rw-rw-rw-  0 unknown unknown 225260 Aug 27 10:46 blib/html/site/lib/D
+BD/Pg.html
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:46 blib/html/site/lib/D
+BD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:46 blib/html/site/lib
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/html/site
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/html
-rw-rw-rw-  0 unknown unknown      0 Aug 27 10:45 blib/lib/auto/DBD/Pg
+/.exists
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/auto/DBD/Pg
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/auto/DBD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/auto
-r--r--r--  0 unknown unknown    545 Aug 20 11:41 blib/lib/Bundle/DBD/
+Pg.pm
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/Bundle/DBD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/Bundle
-rw-rw-rw-  0 unknown unknown      0 Aug 27 10:45 blib/lib/DBD/.exists
-r--r--r--  0 unknown unknown 160452 Aug 22 14:25 blib/lib/DBD/Pg.pm
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib/DBD
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/lib
-rw-rw-rw-  0 unknown unknown      0 Aug 27 10:45 blib/script/.exists
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib/script
drwxrwxrwx  0 unknown unknown      0 Aug 27 10:45 blib

[download]

Back in Windows, when I try to open DBD-Pg-2.10.0-Perl5.8.tar.gz with PowerArchiver, it does detect the duplicate files, but the entire archive has been flattened (i.e., directories are empty & plain files appear as duplicates in the same dir). This is the same thing you're seeing.

You mentioned using an old version of WinZip. Perhaps IZArc could help?

Replies are listed 'Best First'.
Re^8: [OT] Tar file with non-identical duplicate files and no paths?(A solution)
by BrowserUk (Patriarch) on Sep 14, 2008 at 04:31 UTC

    Thankyou for doing that. That is very weird. Given that the file is intended for windows (hence the .dlls), I'm really surprised that tar from unxtools can't read it correctly.

    I just took a look at it using WinRAR which I had kicking around on a CD from a magazine and it sees the structure correctly. So the information is in there, but my copy of tar isn't seeing it, or is ignoring it.

    I will have to a) pull the latest tar from above and see if anything has changed; b) report the problem if it hasn't and see what they say.

    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.
[reply]
      <confession>I don't use use Windows very often, and I don't think I have ever used unxutils. </confession>

      I have some tools from GnuWin32 loaded on XP in a VM for the times when I need such things. They have two implementations of tar:

      • BSDtar (part of libarchive, a recent re-implementation of the BSD streaming archive tools)
      • Gnu tar (requires the Gzip distribution from the same place if you want to unravel gzip'd tar archives)
      I use bsdtar (for some reason my installation of the GNU tools won't unpack gzip'd tar files in a single step; I need to gunzip, then untar... probably just me).

      I downloaded your problem archive and was able to use both the BSDtar tools and the GNU tools to unpack that pesky beast with no issues. Both unpacked the directory tree into a directory tree in the current directory (as tar should do w/o instructions to the contrary). Both worked as I expect tar to work when the archive contains multiple instances of the same file (i.e., the last in the archive overwrites previous instances).

      <confession_reprise> I don't use use Windows very often. YMMV (but hopefully not by much). </confession_reprise>

[reply]
[d/l]
[select]
        GNU tools won't unpack gzip'd tar files in a single step; I need to gunzip, then untar... probably just me

        Nope ... same for me, too. Cygwin's tar utility will do it in one step. I haven't tried BSDtar.

        Although Cygwin's tar seems fine for unpacking, it can sometimes pack in some unwanted attributes/permissions (all files marked executable, in the one particular case that I'm thinking of) - so I avoid it if possible.

        Cheers,
        Rob
[reply]

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