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

The solution is pretty easy. If you want to do this for every file, recursively, use find. It will list all files and directories, descending into subdirectories too.

find . -type f -execdir zip '{}.zip' '{}' \;

Explanation:

• The first argument is the directory you want to begin in, .
• Then we will restrict it to find files only (-type f)
• The -execdir option allows us to run a command on each file found, executing it from the file's directory
• This command is evaluated as zip file.txt.zip file.txt, for example, since all occurrences of {} are replaced with the actual file name. This command needs to be ended with \;

Of course, find has more options. If instead you just want to stay in your current directory, not descending into subdirectories:

find . -type f -maxdepth 1 -execdir zip '{}.zip' '{}' \;

If you want to restrict it to certain file types, use the -name option (or -iname for case-insensitive matching):

find . -type f -name "*.txt" …

Anything else (including looping with for over the output of ls *) is pretty ugly syntax in my opinion and likely to break, e.g. on files with spaces in their name or due to too many arguments.

Use WinZip or Bitzipper to extract that file. (You can also try updating 7zip to the latest version if not already).

It looks like zipx is a format with a couple of newer compression algorithms.

ZIPX (.zipx) is a file extension for a compressed file that can be created/opened with WinZip (they first introduced the format) or Bitzipper. A Zipx file is basically a zip file but created using advanced compression methods, supported in the latest version of WinZip and also by other zip utilities (Bitzipper is the latest one to add ZIPX support). Because of these new compression methods introduced by WinZip, zipx is practically the smallest zip files up to date.

http://www.zipxfile.com/