# mongo
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MongoDB shell version: 2.2.2
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connecting to: test
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> db.createCollection('test', { capped: true, size: 100000 });
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{ "ok" : 1 }
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> db.test.isCapped()
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true
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# mongodump --db test -c test
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connected to: 127.0.0.1
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Wed Jan 30 12:44:26 DATABASE: test to dump/test
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Wed Jan 30 12:44:26 test.test to dump/test/test.bson
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Wed Jan 30 12:44:26 0 objects
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Wed Jan 30 12:44:26 Metadata for test.test to dump/test/test.metadata.json
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# cat dump/test/test.metadata.json
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{ "options" : { "create" : "test", "capped" : true, "size" : 100000 }, "indexes" : [ { "v" : 1, "key" : { "_id" : 1 }, "ns" : "test.test", "name" : "_id_" } ] }
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# mongo
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MongoDB shell version: 2.2.2
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connecting to: test
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> db.test.drop()
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true
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> db.createCollection('test')
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{ "ok" : 1 }
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> db.test.isCapped()
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false
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# rm -rf dump
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# mongodump --db test -c test
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connected to: 127.0.0.1
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Wed Jan 30 12:45:33 DATABASE: test to dump/test
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Wed Jan 30 12:45:33 test.test to dump/test/test.bson
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Wed Jan 30 12:45:33 0 objects
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Wed Jan 30 12:45:33 Metadata for test.test to dump/test/test.metadata.json
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# cat dump/test/test.metadata.json
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{ "options" : { "create" : "test", "capped" : { "$undefined" : true }, "size" : { "$undefined" : true } }, "indexes" : [ { "v" : 1, "key" : { "_id" : 1 }, "ns" : "test.test", "name" : "_id_" } ] }
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