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filemd5

filemd5

The filemd5 command returns the md5 hash for a single file stored using the GridFS specification. Client libraries use this command to verify that files are correctly written to MongoDB. The command takes the files_id of the file in question and the name of the GridFS root collection as arguments. For example:

{ filemd5: ObjectId("4f1f10e37671b50e4ecd2776"), root: "fs" }

MongoDB computes the filemd5 using all data in the GridFS file object pulled sequentially from each chunk in the chunks collection.

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