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p; mapreduce
show dbs show database names
show collections show collections in current database
show users show users in current database
show profile show most recent system.profile entries with time >= 1ms
show logs show the accessible logger names
show log [name] prints out the last segment of log in memory, 'global' is default
use <db_name> set current database
db.foo.find() list objects in collection foo
db.foo.find( { a : 1 } ) list objects in foo where a == 1
it result of the last line eva luated; use to further iterate
DBQuery.shellBatchSize = x set default number of items to display on shell
exit quit the mongo shell
总结
到这里有关在Ubuntu 16.04服务器上安装MongoDB社区版教程就结束了。我们将在以后的教程中将推出更多关于如何在生产环境中使用MongoDB的更多细节。
更多MongoDB相关教程见以下内容：
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