--dedup Xtool [updated] < Direct | Overview >

: It is built for multi-threading to utilize modern CPUs (unlike older tools like Precomp ). ⚙️ Technical Mechanics

backup-agent run --src /data --dest /backup --dedup xtool

--dedup xtool directly addresses these failures. By allowing an external tool, the user can deploy a content-defined chunking algorithm (like FastCDC) that resists boundary shifts. For images, the external tool could be a perceptual hash function (e.g., phash ). For cryptographic integrity, the external tool could be b3sum (BLAKE3). The command becomes a pluggable architecture for truth. --dedup xtool

: Xtool scans the data for repeated blocks or "streams." If it finds multiple identical copies, it stores only one instance and replaces the others with lightweight references.

In an era where data volumes are measured in exabytes and duplication rates often exceed 60%, generic solutions are insufficient. The --dedup xtool pattern empowers administrators, scientists, and engineers to deploy the best algorithm for their specific data type—whether it be cryptographic hashing for security, fuzzy hashing for multimedia, or delta compression for versioned binaries. It transforms deduplication from a one-size-fits-all feature into a customizable, verifiable, and extensible architecture. As data continues to grow in variety and velocity, the modular philosophy embodied by --dedup xtool will not remain a niche flag; it will become the standard interface for intelligent, adaptive data reduction. : It is built for multi-threading to utilize

The xtool component is more enigmatic. It stands for "external tool." In this context, --dedup xtool signals that the primary application (e.g., a file archiver like zpaq , a backup utility like restic , or a data processing framework like datamash ) should not rely on its built-in, often generic, deduplication algorithm. Instead, it passes the responsibility—or at least the heavy lifting—to an external, user-specified tool. This external tool could be a cryptographic hash calculator ( sha256sum ), a binary diffing utility ( bsdiff ), a content-defined chunking algorithm ( lbzip2 in a custom pipeline), or even a machine learning classifier for fuzzy duplicates.

: Recent versions report the specific speed and memory benefits gained from the deduplication process in the UI. 🚀 Recommended Usage When using the --dedup flag, consider these best practices: For images, the external tool could be a

finding and removing duplicated features or records in a specified feature class or table. Unlike basic "delete identical" tools, the deduplication engine in XTools Pro allows for a surgical level of control. It doesn't just look for exact matches; it lets you define exactly what "duplicate" means for your specific dataset. Key Capabilities The power of this tool lies in its flexibility. Here is how it helps you maintain a "single source of truth" in your data: Geometry vs. Attributes