# How to reassemble a zip file that has been emailed in multiple parts

7-ziparchivingwinzipzip

I received 3 emails each containing part of a zip file. The extensions end in .z00, .z01 and .z02. (Emailed as such to get around the typical 10Mb attachment limit per email.)

I have put all 3 files into one directory.

I can use both 7-zip and WinZip to open the first file (the .z00 file) and it lists the contents of the zip but when trying to extract the files both programs are reporting errors.

What is the least error prone way of reassembling this zip and getting to the files?

It's fairly safe to assume that the file parts just need to be concatenated together.

The easiest way to do this is within 7-Zip - navigate to the folder in the 7-Zip file manager, right-click on the first file in the sequence, and select "Combine Files..." from the context menu.

It can also be easily done on the command line.

On Windows:

copy /B input.z* output.zip


Or Linux (or if you've got Unix command line tools on Windows using Cygwin or GnuWin32):

cat input.z* > output.zip