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What is the BSON query for the command 'show dbs' (list of databases) in MongoDB?
The command you can use is db.runCommand(). Let us first switch to admin −
> use admin switched to db admin
Now, run the command −
> db.runCommand({listDatabases : 1})
This will produce the following output −
{ "databases" : [ { "name" : "admin", "sizeOnDisk" : 2375680, "empty" : false }, { "name" : "app", "sizeOnDisk" : 32768, "empty" : false }, { "name" : "business", "sizeOnDisk" : 417792, "empty" : false }, { "name" : "config", "sizeOnDisk" : 106496, "empty" : false }, { "name" : "local", "sizeOnDisk" : 81920, "empty" : false }, { "name" : "main", "sizeOnDisk" : 184320, "empty" : false }, { "name" : "my", "sizeOnDisk" : 753664, "empty" : false }, { "name" : "ok", "sizeOnDisk" : 1024000, "empty" : false }, { "name" : "sample", "sizeOnDisk" : 3297280, "empty" : false }, { "name" : "sampleDemo", "sizeOnDisk" : 352256, "empty" : false }, { "name" : "studentSearch", "sizeOnDisk" : 262144, "empty" : false }, { "name" : "test", "sizeOnDisk" : 32944128, "empty" : false }, { "name" : "university", "sizeOnDisk" : 229376, "empty" : false }, { "name" : "web", "sizeOnDisk" : 3661824, "empty" : false }, { "name" : "webcustomertracker", "sizeOnDisk" : 32768, "empty" : false } ], "totalSize" : 45756416, "ok" : 1 }
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