Copy data from a Time Machine volume mounted on a Linux box.

copy-from-time-machine.sh

#!/bin/bash
# 
# Copy data from a Time Machine volume mounted on a Linux box.
#
# Usage: copy-from-time-machine.sh <source> <target>
#
# source: the source directory inside a time machine backup
# target: the target directory in which to copy the reconstructed
#         directory trees. Created if it does not exists.
#
# Details:
#
# Time machine implements directory hard links by creating an
# empty file in place of the directory and storing in its
# "number of hard links" metadata attribute a pointer to a
# real directory in "/.HFS Private directory data^M" named
# "dir_$number".
#
# This script reconstructs a plain directory tree from this
# really ugly apple hack. Tested on a 650GB backup from OSX
# 10.6 mounted on a Linux 3.2.0-38 Ubuntu box. YMMV.
#
# MIT License.
# 
#  - [email protected]
#

self="$0"
source="$1"
target="$2"
hfsd="$3"

unset LANG

set -e

if [ -z "$source" -o -z "$target" ]; then
  echo "Usage: $self <source> <target>"
  exit -1
fi

if [ ! -d "$target" ]; then
  mkdir -p "$target"
fi

if [ -z "$hfsd" ]; then
  # Look for HFS Private directory data
  sysname="$(echo -ne '.HFS+ Private Directory Data\r')"
  hfsd=$source
  while [ "$hfsd" != "/" -a ! -d "$hfsd/$sysname" ]; do
    hfsd=`dirname "$hfsd"`;
  done

  if [ "$hfsd" = '/' ]; then
    echo "HFS Private Directory Data not found in $source, is it an HFS filesystem?"
    exit -2
  else
    echo "HFS Private Directory Data found in '$hfsd'"
    hfsd="$hfsd/$sysname"
  fi
fi

read hlnum type <<<$(stat -c '%h %F' "$source")
if [ "$type" = 'regular empty file' -a -d "$hfsd/dir_$hlnum" ]; then
    source="$hfsd/dir_$hlnum"
    echo "using source from HFS Private Directory Data"
fi

find "$source" -mindepth 1 -maxdepth 1 -and -not -name . -and -not -name .. | while read entry; do
  dest="$target/`basename "$entry"`"
  read hlnum type <<<$(stat -c '%h %F' "$entry")

  case $type in
    'regular file'|'symbolic link')
      cp -van "$entry" "$dest"
      ;;

    'directory')
      # Recurse
      $self "$entry" "$dest" "$hfsd"
      ;;

    'regular empty file')
      if [ -d "$hfsd/dir_$hlnum" ]; then
        # Recurse
        $self "$hfsd/dir_$hlnum" "$dest" "$hfsd"
      else
        echo "Skipping empty file $entry"
      fi
      ;;
  esac

done

It works!

just do what the commenter above said.

For example, to take out only the latest of the home folder, assuming things are mounted under media:

$ sudo ./copy-from-time-machine.sh /media/<current-username>/<time-machine-drive-name>/Backups.backupdb/<old-mac-system-name>/Latest/<old-mac-internal-hd-name>/Users/<old-mac-user-name> <target...>

Managed to get a good deal of files off the device, thank you for the script!

Thank you very much!!!!

Does not need to limit itself to Time machine, can be used to copy out from any HFS+ drive.
Some changes are needed to process also directories with leading or trailing space:

*** copy-from-time-machine.sh.orig	2017-09-16 23:21:54.456987359 +0200
--- copy-from-time-machine.sh	2017-09-16 23:33:01.449132594 +0200
***************
*** 60,67 ****
--- 60,69 ----
    fi
  fi
  
+ IFS=''
  find "$source" -mindepth 1 -maxdepth 1 -and -not -name . -and -not -name .. | while read entry; do
    dest="$target/`basename "$entry"`"
+   IFS=' '
    read hlnum type <<<$(stat -c '%h %F' "$entry")
  
    case $type in
***************
*** 84,87 ****
--- 86,90 ----
        ;;
    esac
  
+   IFS=''
  done
`

Wow, thank you! This just saved my life ahah. As my Ubuntu is in French, the original script didn't work properly