> On 5 May 2016, at 20:01, Martin Wierschin <mar...@nisus.com> wrote: > >> Those files are compressed by the filesystem. In HFS+/MacOS Extended that >> means that the data fork is empty and the file contents are stored in the >> resource fork or extended attributes structure. >> >> http://wiki.sleuthkit.org/index.php?title=HFS#HFS.2B_File_Compression > > Huh, that's interesting and surprising, thanks for the link. Is this method > of stashing compressed data in the xattrs something that's currently commonly > used by OSX? Or is it just some weird infrequently used trick? I see this on > the linked page: > >> Compression is most often used for files installed as part of Mac OS X; user >> files are typically not compressed (but certainly can be!) > > Are a lot of system files compressed like this? Is there any way a user file > might be compressed in such a way through normal user actions?
You can do it explicitly using /usr/bin/ditto. Chris _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
