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Re: Error (bug) in gunzip

From: Bob Proulx
Subject: Re: Error (bug) in gunzip
Date: Mon, 10 Sep 2007 19:32:20 -0600
User-agent: Mutt/1.5.9i

address@hidden wrote:
> I want to use gunzip on linux to "uncompress" a winzip file

If you have 'unzip' available that would almost certainly always be
the preferred tool to unzip a zip file.

> In the meantime we us Putty's pscp.

Uhm...  I do not understand the connection between pscp, an SSH file
copy client, and either gunzip or zip files.  I don't see any

> address@hidden jk]# gunzip -t -S .zip Lifetrack01
> gunzip: Lifetrack01.zip: invalid compressed data--length error

The documentation says:

       Files created by zip can be uncompressed by gzip only if they
       have a single member compressed with the deflation method. This
       feature is only intended to help conversion of tar.zip files to
       the tar.gz format.  To extract a zip file with a single member,
       use a command like gunzip <foo.zip or gunzip -S .zip foo.zip.
       To extract zip files with several members, use unzip instead of

What is in your zip file?  If it contains multiple files or does not
match the expected zip format then this won't work.

  unzip -v Lifetrack01.zip

Better to use unzip on zip file and simply avoid the issue entirely.


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