With some recent discussion about metadata I thought I'd start the
beginnings of a reference page of what classes of metadata there are
as well as which tools support dealing with it. What came out of it
is this:
Now, I must disclaim any and all accuracies (or lack thereof) this
has :). This is strictly from experience and you'll notice is
incomplete where I don't proclaim support for an item. An absense of
a Yes or No in a table cell indicates I didn't know the answer. But
that's exactly why I made it a wiki page and why I'm sending this
message: I'd like others with their experience and knowledge to
contribute to the document so that we may all gain from it :).
Also, I've mashed terms a bit with this document. For example the
metadata types are categorized by the API that they're accessed
with. This may or may not be appropriate: for example there may be
some overlap (ACLs are implemented as system extended attributes I
think).
Anyway, comments and contributions welcome.
This is a reasonable first attempt, but I would caution a date or as
of version x or something in the entry.
However trying to class it specifically along these lines is pretty
hard. For instance "Finder metadata" is mostly POSIX date metadata
along with certain BSD flags as well and then some stuff that is
unique in it's own right, some of which get's munged. An example here
is that ditto *does not* preserve all Finder info properly (i.e.
creation date). So should ditto get a No rather than the Yes listed?
Probably.
I think what people really need to see is an enumeration of each
specific metadatum. As we've seen reported over and over most so
called Mac sysadmins firmly believe that their copy mechanism of
choice is working just fine, which is obviously NOT the case. ;)
--
-dhan
------------------------------------------------------------------------
Dan Shoop AIM: iWiring
Systems & Networks Architect http://www.ustsvs.com/
email@hidden http://www.iwiring.net/
1-714-363-1174
"The wise man doesn't give the right answers, he poses the right
questions." -- Claude Levi-Strauss
iWiring provides systems and networks support for Mac OS X, unix, and
Open Source application technologies at affordable rates.
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