How to search the files inside a zip file?

I have a zip file which contains another 1000 zip files and I need to search among these zip files and separate 200 of them and copy them to my folder. Is there any way to do that?

Answer 1

[Walter Roberson]

You could adapt http://www.mathworks.com/matlabcentral/fileexchange/32089-listzipcontents

Note: there was a posting a couple of weeks ago indicating that MATLAB's zip facility (which calls Java's zip libraries) is much much slower at unzipping than an external unzip.

It is plausible that you might want to use a MATLAB program to analyze a zip file to figure out which specific parts you wanted to extract, but that you might then call out to 7zip or the like in order to do the actual extraction.

[Kian Azami]

The zip file I want to search the content has the size about 50 GB and inside this zip file there are another 1330 zip files which contain the information for a particular test. For me just 300 of these files are important which I have their names as a list in excel file.

I would like to write a script in MATLAB to search these files and copy them to my particular path.

The problem is that they are inside a zip file. If they were inside a Folder I could do the search and copy them by the code I have.

[Walter Roberson]

You will probably need to code this in Java. Java has a method to work with a zip file from memory instead of needing to extract it.

However, 50 GB is pretty large and I think it likely that you would get much higher performance using some kind of external tool.

You might find something useful in https://unix.stackexchange.com/questions/239898/listing-the-files-from-the-nested-zip-file-without-extracing or https://www.thecodingforums.com/threads/can-i-list-contents-of-nested-zipfile-using-archive-zip-withoutextracting-the-outermost-zip.884534/

[Kian Azami]

Thank You Walter, the resources you suggested are useful.