How to quickly check if a zip file is corrupted?

compression zip unzip corruption
thuantta picture thuantta · Oct 17, 2010 · Viewed 35k times · Source

Does anyone have any ideas for how to pragmatically quickly check if a zip file is corrupted based on file size? Ideally the best way to check if a zip is corrupted is to do a CRC check but this can take a long time especially if there is a lot of large zip files. I would be happy just to be able to do a quick file size or header check.

Thanks in advance.

Answer

AzizSM picture AzizSM · Aug 22, 2017

Use zip -T to test the the file corrupted or not. Sample corrupted file look like this:

 zip -T filename.zip
        zip warning: missing end signature--probably not a zip file (did you
        zip warning: remember to use binary mode when you transferred it?)
        zip warning: (if you are trying to read a damaged archive try -F)

zip error: Zip file structure invalid (filename.zip)

Related questions

What is a good Java library to zip/unzip files?

I looked at the default Zip library that comes with the JDK and the Apache compression libs and I am unhappy with them for 3 reasons: They are bloated and have bad API design. I have to write 50 lines of boiler …

Read More
print content of more than one file in a zip archive

I have some zip files that are really large and I want to print them without extracting first. I am using zcat and zless to do that and then I redirect the output to a different application. When my zip …

Read More
How do you unzip very large files in python?

Using python 2.4 and the built-in ZipFile library, I cannot read very large zip files (greater than 1 or 2 GB) because it wants to store the entire contents of the uncompressed file in memory. Is there another way to do this (either …

Read More