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I've got a large zip file that I am using Terminal to unzip, like so:

unzip /Volumes/9.25.17\ Backup/Documents.zip -d /Users/evan/Desktop/

When I try this, everything works fine until it tries to extract a particular mp4 file. It gets hung up on this one file every time:

inflating: /Users/evan/Desktop/Documents/Creativity/Rotblatt copy.mp4  error:  zipfile read error

I don't really care about this file - is there any way to tell terminal to ignore it while unzipping?

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6
  • Try with the -x "copy.mp4"
    – George Udosen
    Sep 29, 2017 at 15:25
  • I've tried using -x followed by just about every possible iteration of the filename but it still tries to read it
    – adustybowler
    Sep 29, 2017 at 15:29
  • Try unzip /Volumes/9.25.17\ Backup/Documents.zip -x "copy.mp4" -d /Users/evan/Desktop/
    – George Udosen
    Sep 29, 2017 at 15:32
  • Yes, I've tried that. Does more of the file path need to be included?
    – adustybowler
    Sep 29, 2017 at 15:34
  • yes it has to be included addind an answer now
    – George Udosen
    Sep 29, 2017 at 15:35

3 Answers 3

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It's not that the file "copy.mp4" is corrupted, it is that the zip file itself has some damage.

You can attempt to fix the zip file:

zip -F /Volumes/9.25.17\ Backup/Documents.zip --out newfile.zip

and then attempt to extract the files from newfile.zip. If this does not work, you can attempt a more comprehensive fix:

zip -FF /Volumes/9.25.17\ Backup/Documents.zip --out newfile.zip

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  • -F doesn't work. -FF gives: zip I/O error: Read-only file system
    – adustybowler
    Sep 29, 2017 at 15:51
  • @EvanOlawsky You will need to run the command in a file system to which you have write permissions... I updated the command (I forgot the --out modifier)
    – Charles Green
    Sep 29, 2017 at 15:55
  • Yes, I included the --out modifier. What do you mean about a file system where I have write permissions?
    – adustybowler
    Sep 29, 2017 at 15:56
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    The "I/O error: Read-only file system" would seem to indicate that you do not have write permissions
    – Charles Green
    Sep 29, 2017 at 15:58
  • 1
    Can you copy the entire zip file to your home directory and perform the operation from there?
    – Charles Green
    Sep 29, 2017 at 16:47
1

I had similar problem due to power failure when recording some data and directly passing it to zip. The zip file was missing the ending. zip -F or zip -FF did not solve the problem. Finally I found solution, that allowed to save most of the file:

jar xvf Document.zip

The last part of corrupted file was still lost, but it was good enough for me.

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  1. Find the absolute path to the file with:

    unzip -l /Volumes/9.25.17\ Backup/Documents.zip | grep copy.mp4

  2. Then do:

    unzip /Volumes/9.25.17\ Backup/Documents.zip -x "/path/to/file/from/step/1/copy.mp4" -d /Users/evan/Desktop/
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3
  • This works (the process ignores the file I want it to), but it turns out there are more files that it gets hung up on too.
    – adustybowler
    Sep 29, 2017 at 15:52
  • Sounds as if the problem is a corrupt zip file.
    – Panther
    Sep 29, 2017 at 15:57
  • @EvanOlawsky then it appears that it didn't download completely
    – George Udosen
    Sep 29, 2017 at 16:17

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