Overriding Mac file permissions in Linux

Discussion in 'OS X' started by luminol74, Dec 4, 2008.

  1. macrumors member

    Joined:
    Apr 17, 2008
    #1
    Hello all,

    I'm trying to recover a some data from a LaCie EDMini drive because the caddie went down. There are application solutions out there including R-Studio and Data Recovery II but they are both ~$80 solutions and don't always recover the metadata meaning I'd be renaming hundreds and hundreds of files which isn't going to happen!

    Anyway, I'm using a SATA to USB adapter and I loaded up an Ubuntu Live CD to look at the file system and presto it mounted all my files. Brilliant. Only problem is that I had this EDMini in a network with Windows and Mac machines and I've been able to recover all files that were created on Windows but the files that were created on OS X (all my files...) are locked. It tells me I don't have permission to access the files.

    Whilst that boosts my confidence in OS X security I do need to bypass those permissions somehow and my knowledge of Linux is poor. I tried sudo cp commands but was getting nowhere. Then decided to create a username and password that was identical to my OS X username and password to see if that worked and it doesn't. :(

    Is anyone familar with this situation or knows how to override OS X file permissions so I can copy the files onto another drive?

    Help appreciated, thanks.

    Simon
     
  2. macrumors 65816

    Joined:
    Jun 29, 2007
    #2
    You might not be able to change them on the drive you might have to move them off first. Then you can use either...

    chown -R YOURNAME: FOLDERNAME

    which will give your linux user(YOURNAME) ownership of all of the files in FOLDERNAME

    Or you can change the permissions on all the files
    chmod -R 777 FOLDERNAME

    You will have to be sudo for these to work correctly
     
  3. thread starter macrumors member

    Joined:
    Apr 17, 2008
    #3
    detz I could kiss you! chmod -R 777 has worked an absolute treat. No idea what the command actually means but it's just saved me a thousand files or more. Thanks for the tip!

    Simon
     
  4. macrumors 601

    brand

    Joined:
    Oct 3, 2006
    Location:
    127.0.0.1
    #4
    Wikipedia's take on CHMOD
     
  5. macrumors 65816

    macrem

    Joined:
    Mar 11, 2008
    Location:
    Amsterdam
    #5
    edit: doe anyone know why the sudo command from Ubuntu didn't work for the OP? I would have guessed it would, especially since chmod worked.
     

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