Re: Compression recommendation for Windows


"BORG Xx(°..º)xX" <Xxo@oxX> wrote in message
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"BORG Xx(°..º)xX" Xx@xX> wrote in message
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"jasen" jasen@xxxxxxxxxxx> wrote in message
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On 2006-08-03, Paul Hemans <pauln.o.s.p.a.m@xxxxxxxxxxxxx> wrote:
I have a large directory structure (1.2GB) multiple sub-directories and
some
fairly large files, the total file count is around 7,000. Can I use a
combination of TAR and GZIP to deal with this? Winzip ver 6 creates a
compressed file of 440MB but I can only access the first 360 files!

we have .tar.gz files 2.5G in size with 75000 files...
tar is industrial strength, but for your task zip should work too.
I think winzip is ignoring some of your files.

I've never been a fan of those GUI archive tools

Before WinRAR I had always used LHA, then ARJ.

WinRAR works great, both GUI & command line.
I gave up on Zip ages ago...


note, however, that rar is not free, nor is it an open format.

tar, gzip, and zip, however, are all open formats, and there is a much
larger selection of compressors and decompressors available.

<fake indent, lazy>
There are FREE decompressors for most (pretty much all)
types of OS (current & ancient eg: Amiga) & the
decompression source & decompressors
are freely available to DL on the www.rarlab.com website
(and assorted P2P networks).

this does not change that it is not technically an open format however.
the existance of a few free tools does not necissarily mean it is an open
format.


there is a much wider selection of tools for zip, in fact, I have written
code for encoding/decoding zip files as well...


my main complaint about zip is that it is designed in a way that messes up
the possibility of implementing full read/write access, which required me to
make my own format for cases where this might be necessary (app usage of a
filesystem emulation layer).

if I were to revise the format, I would probably drop a few features which
are unlikely to be all that useful for my uses (fragmentation), and maybe
allow compression of the central directory (however, this would risk
reducing the practical limits of the format in the name of a potentially
minor reduction in total filesize).

it works though...

this also gives a sense of security for the future ability to easily
decompress these formats.

or such...

With freely available decompression source it will never die
unless all the lights go out :) And it craps all-over most
other archivers, especially when using "Solid" compression
and the "Best" compression settings.

I have tried Soooooooo,ooooo,ooo many other programs
looking for anything better yet I am still using WinRAR.
(WinRAR can also make ZIP archives & extracts many types)

-Cheers.

winrar is itself, a program, not only that, one where people are expected to
pay for it.

the rar format itself, is a format, but it is effectively (at least
currently afaik) tied to the existance of winrar. even if freely available
decompressors exist, freely available compressors need to exist as well, and
the format needs to be maintained as an open standard.


zip, tar.gz, and tar.bz2 are imo safer bets for long term usability.
of course, tar is crufty on windows, making zip generally the best bet for
general uses (even if compression is not always all that great with zip...).

nearly anyone can write programs to encode or decode zip archives, and the
specifications are commonly available (even if, albeit, some newer features
make the format crufty, or may risk encroaching on existing patents...).

or such...


Bye.
Jasen


.

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