How to unzip split files on OS X

Question

How do I unzip a split zip file?

In Terminal, I wrote: unzip filename.zip and it did not unzip this file.

Terminal wrote:

$ unzip filename.zip
Archive:  filename.zip
warning [filename.zip]:  zipfile claims to be last disk of a multi-part archive;
  attempting to process anyway, assuming all parts have been concatenated
  together in order.  Expect "errors" and warnings...true multi-part support
  doesn't exist yet (coming soon).
file #1:  bad zipfile offset (local header sig):  4
file #2:  bad zipfile offset (local header sig):  98
file #3:  bad zipfile offset (local header sig):  471
file #4:  bad zipfile offset (local header sig):  6635222

Double clicking of this file creating filename.zip.cpgz

What can I do?

Answer 1

This was the straight forward and only solution that worked for me on OS X (taken from here).

1. To create a split zip archive (a series of files named zip, z01, z02...), run following command in Terminal:

zip -s 100m -x "*.DS_Store" -r split-foo.zip foo/

2. To extract a split zip archive (a series of files named zip, z01, z02...), run following command in Terminal:

First, combine the split archive to a single archive:

zip -s 0 split-foo.zip --out unsplit-foo.zip

Extract the single archive using unzip:

unzip unsplit-foo.zip

Answer 2

Just cat all zip files in sequence to a single file and use unzip command on that.

For example:

cat file.zip.001 > s.zip 
cat file.zip.002 >> s.zip
cat file.zip.003 >> s.zip

unzip s.zip 

Answer 3

additionally to this answer if you have split binaries, like file.zip.001, file.zip.002 ... you may just need to combine the files e.g. using cat command:

cat file.zip.* > single.zip

Answer 4

Just run this command on the bash prompt to concatenate the zips.

for i in `seq 1 5`; do cat file.zip.0$i>>uncut-version.zip; done

the above example has 5 parts.

Then unzip the file using your favourite method

unzip uncut-version.zip

Answer 5

In my case, within OS X 10.11.6, i had a multipart archive with extensions

.z01
.z02
... (etc)
.zip

Using

zip -s 0 in.zip --out out.zip

did get me a single zip. It did not extract with unzip, but did with 7zip, installed via MacPorts:

port install p7zip
7za x out.zip

Answer 6

Tested on a 10.8.5 Mac OS

• Use Stuffit Expander free version
• Just drag the last file (the one with .ZIP extension) in Stuffit
• Wait for a while because it seeme Stuffit re-build first the complete file
• See all your files unzipped

Answer 7

I hit this issue when trying to re-assemble a large directory downloaded from Google Drive.

Similar to this issue, if you are dealing with a set of zip files that do not include numbered file extensions (foo.z01, foo.z02, etc) and are simply multiple zip files that should be unarchived together into the same directory, the following worked for me:

unzip '*.zip' -d /path/to/unzip/destination

Answer 8

This was the most simple solution I could find:

find ./ -name "*.zip" -exec unzip {} \;

Answer 9

What worked for me is very simple: Open the .z01 file with the free Mac application The Unarchiver (available from the Mac App Store). It handles the extraction nicely.