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The command "named" is short for "name daemon" and it refers to the daemon process named "named" that is used to manage the Domain Name System (DNS) on a Unix or Linux system.
The DNS system translates human-readable domain names into IP addresses that computers can understand. The "named" command is used to start, stop, and manage the functionality of the DNS server.
When you run the "named" command, it starts the DNS server process and allows it to listen for and respond to DNS queries from clients, as well as perform tasks such as resolving domain names by querying other DNS servers.
In addition to starting and stopping the DNS server process, the "named" command also accepts various options and parameters that can be used to configure and control the behavior of the DNS server. These options could include specifying the configuration file to use, defining the DNS zones to manage, setting logging options, or specifying the network interfaces to listen on.
Overall, the "named" command is essential for managing the DNS functionality on a Unix or Linux system, ensuring the proper functioning of domain name resolution and communication between devices on a network.