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Possibly speed copies via Terminal
Authored by: ikioi on Jun 09, '07 10:01:28PM
I recently tested various backup tools on mac os X 10.4.9 (Intel) and I found that "cp -Rp" preserves:
  • ACLs
  • Resource Forks
  • HFS+ extended attributes (new arbitrary name value pairs)
  • BSD flags (for example "uchg")
  • all of the Carbon CatalogInfo that I tested (Creator, Type, Label, Finder Flags, and all dates)
  • Most Unix lstat() info (UID, GID, perms, etc)
The only things cp -Rp don't preserve are:
  • hard links (two hard links will be copied as independent files
  • UID and GID of a symlink when they differ from the UID and GID of the target of the link.
  • "inode" number (aka file id or folder id) , but nothing short of dd or ASR in device mode can preserve this.
All in all, unless you want to use ASR/device mode (which is a lot like ghost for windows, and sort of like dd for UNIX ) then SuperDuper and cp are the two most faithful ways of backing up files and their metadata on Mac HFS+ drives. These two did much better than CCC, ditto, ASR/file mode, Synk, hfsrsync, RsyncX, etc, in my tests.

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Possibly speed copies via Terminal
Authored by: ikioi on Jun 09, '07 10:09:17PM
Correction: When I said "Carbon CatalogInfo" , I meant "HFS CatalogInfo"

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