I have a file supposingly an ebook, in tgz format. How do I view these files.
LzxRepacker doesn't really says that it unarchieves for viewing.

Thanks!

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Install the SDK using Grunch or download it from morphos-team.net then:

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> I have a file [...] in tgz format. How do I view these files.

TGZ is short for TAR.GZ. If you double click the file on Ambient, you will see the contents of the GZip container, which is a TAR file. If you then double click the TAR file, Ambient will present you with the final contents.
Instead of using Ambient, you can also use command line with the xadunfile command.

Thanks I Think I had sdk previously, so I tried
Ram Disk:> GG:bin/tar xvf ram:file.tgz
GG:bin/tar: Hmm, this doesn't look like a tar archive
GG:bin/tar: Skipping to next file header
GG:bin/tar: Only read 8134 bytes from archive ram:file.tgz
GG:bin/tar: Error is not recoverable: exiting now
ram disk:>

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It might just be a gzipped file rather than a gzipped tarball.

Try this and see what it reports:

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Thanks Andreas. That was simple pdf decompressed.

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I have (occasionally) come across tar.gz (aka tgz) where the contents of the gz is a tar file in a directory, but misnamed tar.gz. The above method doesn't work with those.

foo.tar.gz contains only a directory named ".." which contains foo.tar.gz (which is actually a tar file mislabelled)
foo.tar.gz contains the packed files, but must be renamed to foo.tar before Ambient will recognise it correctly.

To access these the contents of the gz (either the ".." directory, or the file foo.tar.gz) must be copied to a real location (eg ram) before the tar.gz can be renamed to .tar, and then unpacked.

It shows up that Ambient mime types rely on file extensions to some degree rather than sniffing file headers.

Example: Coin3D library

> I have (occasionally) come across tar.gz (aka tgz) where the contents of
> the gz is a tar file in a directory, but misnamed tar.gz. The above method
> doesn't work with those.

Indeed, I just tried it with the archive you linked to. But fortunately, the other method I mentioned (xadunfile or xaduntar) still works, even with the wrong file extension.