063298dd46
Removed my oh-so-clever "shadowdir" and "shadowfile" concepts for
the directory to be examined for potential deduplication. Instead
we call them subject directories and subject files, because they
are subject to our process.
Now creates a temporary file, removed on exit, as our temporary
access and modification time holder. When replacing a file with a
hard link, we first copy the atime/mtime of its directory to the
temporary file. THEN we perform the link. After the link, we
restore the original atime/mtime of the enclosing directory from
the temporary file. This is useful for backups, where we do not
want the directories to have newer timestamps (timestamps matching
the date/time that we run deduplication, because creating the link
counts as a modification of the directory).
Time Machine Utilities
Installation
Simply save the utility in your system path and mark it as executable.
If you don't know your system path, you can find it with this Terminal command:
echo "${PATH}"
To mark a utility as executable, use the chmod command:
chmod +x tmimport.sh
chmod +x dirdedupe.sh
If you're still lost, do this:
-
In your Home folder, create a new folder called
.bin -
Download and save the utilities to your new
.binfolder -
Use a text editor to open
.zshrc(or.bash_profileon older Macs) from your Home folder and add the following line at the end:PATH=${PATH}:${HOME}/.bin -
In Terminal, run the following commands:
chmod +x ~/.bin/*.sh -
Quit (or restart) the Terminal.
tmimport
TIME MACHINE IMPORT
USAGE
tmimport.sh <backup drive>
DESCRIPTION
Time Machine Importer modifies the metadata of a backup drive to match the
current computer's model and unique identifiers (primary MAC address and
hardware platform UUID/provisioning UDID) and attempts to 'inherit' the
backup history.
The backup drive should be specified by disk or volume name (or path) or
the mount point of the backup drive. If Time Machine Importer cannot find
an appropriate disk volume or mount point, it will check to see if the
specified directory is a valid Backups.backupdb location (or a machine
directory under one).
A future version may attempt to detect HFS+ or APFS partitions serving as
backup drives, and, if a backup drive is specified as a device path, it
will automagically choose the correct backup path.
tmbless
TIME MACHINE BLESS
USAGE
tmbless.sh <snapshot directory>
DESCRIPTION
Time Machine Blessing modifies the metadata of a snapshot directory
(i.e., a datestamped directory inside a Backups.backupdb/machinename/
directory) so that the metadata reflects a backup completed on that date
and the metadata of the top-level drive matches that of the current drive.
These modifications should allow restoration of files within the Time
Machine restore UI.
dirdedupe
DIRECTORY DE-DUPLICATOR
USAGE
dirdedupe.sh [--execute] masterdir shadowdir
DESCRIPTION
For each file in shadowdir, replace it with a hard link to the matching file
(if any) in masterdir. A file will be considered a match if, and only if,
it shares the same file name, relative path, and contents.
OPTIONS
--execute Actually remove and link duplicate files. By default, this
program runs in test mode.