[TriLUG] Strangeness in the Zip-world

[Dewey Hylton via TriLUG]

For what it's worth, sometime in the not-too-distant past, one of my command-line
tools downloaded from a website that offered compression on the webserver side ...
In this particular case, the tool downloaded the compressed data but did NOT for
some reason decompress before writing to disk. That took me quite a bit of hunting
to figure out. So I second Brian's recommendation of using a second tool to retrieve
the file, just to rule out this specific bug in your current tool.

You may also work around the issue the same way I did once I found the issue, which
was to filter the file through the proper decompression program before handing off
to the unzip command. This of course only applies if your issue was the same as my
own ...

----- On Jul 4, 2019, at 12:55 PM, Triangle Linux Users Group General Discussion trilug at trilug.org wrote:

> you can check all of these to see if any help ID the problem or fix it:
> 
>   - Re-download the zip archive from the source.  Re-downloading the zip
>   archive often fixes the problem if the original download was interrupted or
>   corrupted somehow
>   - Use a different download method for the zip file such as curl etc
>   - Attempt to repair the zip archive at the command line with the
>   following syntax, replacing file names as needed:
> 
> *zip -FF problem.zip --out repaired.zip | unzip*
> 
> 
> 
>   - If the archive file is multiple parts, make sure all of the zip files
>   are contained within the same directory
>   - *Verify the zip file* with sha1
>   <http://osxdaily.com/2012/02/05/check-sha1-checksum-in-mac-os-x/> or md5
>   <http://osxdaily.com/2009/10/13/check-md5-hash-on-your-mac/> if
>   possible, this can tell you if the file has been corrupted or modified
>   somehow compared to what you intended to download
> --
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