Sync

The source directory.

The target directory.

Optional set of paths to use for skipping existing files and directories in source, where a skipped file or directory is treated as if it did not exist in the first place. The given paths may contain wildcards. Paths without a trailing separator are matched against files, those with a trailing separator are matched against directories.

Optional set of paths to use for keeping files and directories in target, where a kept file or directory is treated as if an identical counter-part existed in source. The given paths may contain wildcards. Paths without a trailing separator are matched against files, those with a trailing separator are matched against directories.

Use file content hashes to detect actual modifications if both file length and timestamp are not identical?

The number of threads to use for copying.

If the timestamps of two files differ by this delta in milliseconds or less, the timestamps are considered to be equivalent.