Thread: Zip on 770?
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AaronL is offline AaronL
2005-12-22 , 08:22
Posts: 81 | Thanked: 1 time | Joined on Dec 2005
#4
Originally Posted by putkowski
See

man gunzip

"gunzip can currently decompress files created by gzip, zip, compress, compress -H or pack'
Well, after that text, the following paragraph in the man page states the following:

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 zip files with several members, use unzip instead of gunzip.
So basically, gunzip is not generally useful for handling ZIP files since it can only handle the case when a single file has been compressed. In addition, the version of gunzip that comes with the default 770 firmware is really a link to the busybox implementation (use ls -l on /bin/gunzip to see), and the busybox implementation is limited and doesn't appear to support ZIP files at all. Not to mention, it states in the gzip FAQ at http://www.gzip.org/#faq17 that gunzip does not support .ZIP files.

There does appear to be some support for ZIP files. As stated on a different thread, the backup utility generates ZIP files. However, I don't think that there is a standalone utility on the device that can handle ZIP files. At least, I haven't been able to find one. Apparently, the zlib library, which is installed on the 770 (from the zlib1g package), can be built in such a way that it supports ZIP files, so this might be where applications are getting ZIP file support.

No, there are no man pages on the device, presumably to save space. A list of packages that are installed as part of the default firmware and developer's firmware can be found at http://repository.maemo.org/unstable...reference.html . man-db is the name of the Debian package that includes the man utility, and it is not installed for either the default firmware or developer's firmware.

AaronL