Outside the Rabbitt Hole

#!/usr/bin/env bash

TMP_FILE=/var/tmp/.closefd.$$
trap "rm -f ${TMP_FILE}" EXIT QUIT INT 

function usage() {
  echo "$(basename $0) <pid> <file descriptor>"
  exit 1
}

if [ $# -ne 2 ]; then
  usage
elif [ $(echo $1$2 | grep -cP '^\d+$') -eq 0 ]; then
  usage
else
  pid=$1
  fd=$2
fi

cat << EOF >> ${TMP_FILE}
#!/usr/bin/gdb -x
attach $pid
p close($fd)
quit
EOF

chmod +x ${TMP_FILE}
${TMP_FILE}

exit $?

1. Run the following script to enable samba network devices and generate a sparsebundle image:

   #!/bin/env bash
   
   HOST="$(hostname -s)"
   BUNDLE="${HOST}.sparsebundle"
   SIZE=""
   
   if [ -d "${BUNDLE}" ]; then
    echo "A bundle directory '${BUNDLE}' already exists in the current directory - please remove it before proceeding"
    exit 1
   elif [ -e "${BUNDLE}" ]; then
    echo "A file with the name '${BUNDLE}' already exists in the current directory - please remove it before proceeding"
    exit 1
   fi
   
   echo "-- Enabling Unsupported Network Volumes (e.g., Samba Shares)"
   defaults write com.apple.systempreferences TMShowUnsupportedNetworkVolumes 1
   
   echo "-- Preparing to build a Sparse Bundle Image:"
   while [ $(echo ${SIZE} | egrep -c '^[0-9]+$') -eq 0 ]; do
    echo -en "   * What is the maximum size you want to enforce on your backup image (in Gigabytes, e.g., 100): "
    read SIZE
   done
   
   echo -n "   * Building... "
   hdiutil create -size ${SIZE}G -fs HFS+J -volname 'Time  Machine Backups' -type SPARSEBUNDLE "${BUNDLE}"
   
   echo "-- Determining Hardware UUID..."
   UUID=$(/usr/sbin/system_profiler 2>&- | grep 'Hardware UUID'  | awk '{ print $3 }')
   
   echo "-- Generating TimeMachine plist..."
   cat << EOF >> "${BUNDLE}/com.apple.TimeMachine.MachineID.plist"
   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
   <plist version="1.0">
    <dict>
    <key>com.apple.backupd.HostUUID</key>
    <string>${UUID}</string>
    </dict>
   </plist>
   EOF
   
   echo
   echo "Bundle is now ready for use. Please move the bundle to the network location that you will use for backups."
   echo "The bundle is located at: ${PWD}/${BUNDLE}"
   echo

2. copy your new sparsebundle folder to your network share and point your TimeMachine at the share volume.
3. Force a backup (click on the TimeMachine icon and choose “Backup Now”)
4. It should start verifying your backup image and then proceed to backing up your computer.