duplicacy 命令

常用示例

说明

Duplicacy is a cross-platform backup tool featuring lock-free deduplication. It uses variable-length chunking to split files into chunks that are deduplicated across all backups, significantly reducing storage requirements for similar data. A unique feature is lock-free design: multiple computers can back up to the same storage simultaneously without coordination. Each client operates independently, making Duplicacy suitable for backing up multiple machines to shared cloud storage. The tool supports numerous storage backends including local disk, SFTP, WebDAV, and cloud services (AWS S3, Backblaze B2, Google Cloud, Azure, Wasabi, etc.). Client-side encryption ensures data privacy even with untrusted storage. Duplicacy uses a two-repository model: the working directory (source) and the storage (destination). Multiple working directories can share the same storage, benefiting from cross-machine deduplication. The prune command implements flexible retention policies with tiered keep rules.

参数

init _snapshot_id storage_

Initialize a new repository with the specified snapshot ID and storage location.

backup _-stats_ _-threads n_ _-hash_ _-t tag_

Create a new backup snapshot.

restore _-r revision_ _-overwrite_ _-delete_

Restore files from a snapshot.

list _-all_ _-id snapshot_id_ _-files_

List available snapshots.

prune _-keep spec_ _-id snapshot_id_

Remove old snapshots based on retention policy.

check _-files_ _-stats_

Verify repository integrity.

diff _-r revision_

Show differences between snapshots.

cat _file_ _-r revision_

Print contents of a file from a snapshot.

-encrypt

Enable encryption for the repository.

-threads _n_

Number of concurrent threads.

-stats

Show detailed statistics.

-verbose

Enable verbose output.

-d

Enable debug logging.