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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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