This page shows examples for bsondump.
Run bsondump from the system command line, not the mongo shell.
By default, bsondump outputs data to standard output. To create corresponding JSON files, you can use the --outFile option:
bsondump --outFile=collection.json collection.bson
Use the following command (at the system shell) to produce debugging output for a BSON file:
bsondump --type=debug collection.bson