difftree compares two directory trees. Use this script to, for
example, compare a filesystem to a backup. The output is similar to
that produced by diff -qr, but difftree also compares file
attributes (permissions, etc.) and is more intelligent about symbolic
links (it does not follow symbolic links, but compares the links
themselves).
File attributes that are NOT compared: device number; inode number; number of hard links; number of blocks; last access time; last status change time; and non-POSIX attributes. Permissions and modification times of symbolic links are not compared because these attributes are typically not preserved by copy or backup tools.
Included in this repository is a companion script, difftree-touch,
that triggers MacOS Time Machine to back up files that are
persistently not being backed up.
Both scripts contain detailed usage information.