In any DBMS, aggregations are operations that process data records and return computed results. MongoDB provides a rich set of aggregation operations that examine and perform calculations on the data sets. Running data aggregation on the mongod instance simplifies application code and limits resource requirements. In my current...
Hi, It is a major problem when we forgot our root password in linux. But don't know how to recover it. First thought that came to mind reinstall machine. But I found a way that might help you without reinstall and save your hours. It is a interesting trick in linux to get back our root password in few minutes. I used it on ubuntu...