What is the purpose of the nameserver parameter in Linux?

In Linux systems, the nameserver parameter is used to configure DNS (Domain Name System) servers. It specifies the IP address of the DNS server used for resolving domain names.

When you type a domain name into a web browser, the operating system sends that domain name to a DNS server to obtain the associated IP address. The nameserver parameter specifies the list of IP addresses for the DNS servers to be used so that the system can send domain resolution requests to these servers.

Primary function:

Domain name resolution: The primary function of the nameserver parameter is to translate domain names into IP addresses. By specifying the IP address of the DNS server, the system can convert the domain name provided by the user into the corresponding IP address.

Accessing Internet resources: By properly configuring DNS servers, your system can translate domain names into IP addresses, allowing you to access various resources on the Internet, such as web pages and emails.

Improve performance by setting the IP address of the DNS server closest to your location, reducing domain resolution delays and improving network transmission efficiency.

In Linux systems, the nameserver parameter is typically configured in the /etc/resolv.conf file. You can add or modify the nameserver line in this file to specify the IP address of the DNS server to use.