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In Linux Ubuntu, you do not have any GUI mode to display the RAM detail and Hard Disk details. So you need the commands to view the server status in Ubuntu. 1. View RAM Details You can view RAM details if different units like KB, MB, GB etc. The default is KB. free Output:    total  used   free  shared  ...

As we know that the WAN is used to cover a large geographical area as it work like his name  Wide area networking we can link multiple computer together and make a WAN  and it is used to make switches packets and with the help of Router it is easy to manage a long distance and many computers.The ...

PostgreSQL is the open source relational database system. PostgreSQL has some advanced features of database like  User-defined types Table inheritance Sophisticated locking mechanism Foreign key referential integrity Views, rules, subquery Nested transactions (savepoints) Multi-version ...