zip/unzip

Joe Soap · 06-28-2005, 05:28 PM

Evening Folks

I have a .zip file that's about 3G in size and corrupted - the msg I get is "missing end signature"

However, when I try to repair it with zip's -F option, I get a msg that says "File size limit exceeded". I've since discovered that there is a hard limit of 2G on file size.

Is there any way to get around this limitation? I'd like to repair my file and then unzip it.

Thanks
Joe

Matir · 06-28-2005, 05:39 PM

I doubt it's actually corrupted

Most likely, it just doesn't find the "end signature" by the 2G mark, and gives up.

Unfortunately, despite a careful reading of zip, unzip, gzip, and funzip man pages, I cannot find a solution to this. Perhaps some of the alternative zip programs on freshmeat.net might be of some help.

michaelk · 06-28-2005, 06:03 PM

What is the filesystem type where you are trying to unzip this file?
What kernel are you running i.e. 2.4.x or 2.6.x?

FAT32 has a 2GB file size limitation. With linux filesystems it depends if large file support is included in the kernel. Shouldn't be a problem with 2.6. kernels.

Matir · 06-28-2005, 06:12 PM

My guess is the zip/unzip programs use 32bit integers interally for their representations of file offsets. Just a guess though.

Joe Soap · 06-28-2005, 06:16 PM

I'm trying to unzip it in a Reiser3 file system.

The kernel is 2.6.11-kanotix-11

Whe I run unzip, I get this msg: "unzip: cannot find or open [filename]"

Thanks for the quick answers.

Joe

Electro · 06-28-2005, 06:20 PM

Remove zip and unzip. Download the source for zip and unzip. Then add -D_FILE_OFFSET_BITS=64 to the CFLAGS and CXXFLAGS to the ./configure command. Also do not forget to include largefile option if there is one.

FAT32 has a file size limit of 4 GB, but for safety sake keep files under a gigabyte.

Joe Soap · 06-28-2005, 06:33 PM

Thanks Electro, I'll give it a shot (Tomorrow

.

Cheers
Joe

Sm1ler · 06-29-2005, 08:53 AM

Not really sure if this will help, but cross platform from Win to Lin I have always used an app called 7zip it has so many options as a quick fix it might just meet your requirements.

Best Wishes
Sm1ler

SoRDiD · 07-01-2005, 05:28 PM

i had the same problem with a 10 gig .zip file, and the solution using 7zip worked!!

recompiling unzip from info-zip with -D_FILE_OFFSET_BITS=64 and -D_LARGEFILE_SOURCE didnt work (2.6.11 gentoo kernel)

zlatan24 · 06-18-2007, 09:40 AM

I know program removed able recover zip files(archives), restore ZIP files from damaged media (floppy disks, CDs, DVDs, Zip drives, etc.), fix the Cannot open file: it does not appear to be a valid archive in ZIP archive error.

pwc101 · 06-18-2007, 09:49 AM

Quote:

Originally Posted by zlatan24

I know program (link removed) able recover zip files(archives), restore ZIP files from damaged media (floppy disks, CDs, DVDs, Zip drives, etc.), fix the Cannot open file: it does not appear to be a valid archive in ZIP archive error.

zlatan24, do you realise you have resurrected a 2 year old, resolved thread? And there's a whiff of some spam here too, given your post history. Reported to a mod.

Mara · 06-19-2007, 04:37 PM

Dear zlatan24,
I have edited your post for two reasons:
1. It's advertising.
2. The thread is very old.
3. The program you're advertising is not running Linux, so it does not fit the forum.

It's OK if you post links to tools you're associated with, but if you do not cross the advertisement border and only when it is the right tool to use in that special case.

If you have questions about this policy, contact one of the moderators or the site admin.

archtoad6 · 01-25-2008, 11:50 AM

W/o going to the feedback forum, does anybody know/have a guess why this old thread appeared in the

Subject: LinuxQuestions.org Zero Reply Threads
Date: Tue, 22 Jan 2008

e-mail?

pauljackson · 03-14-2014, 12:42 PM

Java's jar utility supports the zip format and larger files:

jar xf filename.zip