How to install nslookup in redhat Linux?

What is the replacement for nslookup in Linux?

Nslookup is a DNS resolver that allows you to perform lookups on hostnames and IP addresses, and to resolve DNS server names.

The program itself is fairly simple to use, but the problem is that it's very basic and not particularly customizable.

Now that Windows 7 is out and about, many of our readers have probably already discovered that there's a better program available for DNS lookups in Linux. That program is BIND (BIND name server daemon), which is part of the standard Linux distribution. If you're running Linux Mint, you already have the program installed, but if you're running Debian, Ubuntu or another Linux distribution, you can install BIND from your package manager.

The advantage of BIND over nslookup is that it's far more flexible and customizable, and will let you do a lot more than what you can do with nslookup. I'll show you how you can use BIND to perform DNS lookups, and we'll look at some advanced features of the program. In particular, I'll show you how you can setup BIND to act as a caching name server for your network, so that you'll get DNS lookups as quickly as possible.

In this article, I'll be showing you how to perform a number of different types of DNS lookups using BIND. You'll learn how to resolve hostnames, how to lookup IP addresses, and how to resolve domain names and subdomains. I'll also show you how to configure BIND to act as a caching name server, and I'll show you how you can configure BIND to act as an authoritative name server, in which case you don't need to manually setup DNS records, you can just tell the BIND program what to do. Finally, I'll show you how to configure BIND to act as a forwarder, which will cause BIND to send queries to a name server for you.

Now, I'm going to show you how you can perform all of these kinds of lookups using the BIND program. You'll see how the program works, and you'll see the commands that you can use in the command line to perform each type of lookup.

How to install nslookup in CentOS 8?

Nslookup is a utility which can be used to resolve the name of a remote host by querying a DNS (Domain Name System) database of nameservers. In this tutorial, we will show you how to install the nslookup tool in your CentOS 8 operating system.

The nslookup utility is part of the BIND package. In order to install the nslookup tool, we need to update the yum repository and install the bind package.

# yum update # yum install bind. We have successfully installed the nslookup tool in our CentOS 8 system. Now we can use the nslookup tool to look up the IP address and the domain name of any host.

Install python-libnss and nscd packages. To make the nslookup tool available to the system, we need to install the python-libnss and nscd packages. These packages contain helper programs which help us in resolving the name of a host on the internet. We will show you how to install these packages in our CentOS 8 operating system.

# yum install python-libnss nscd. Configure the hosts file. In order to configure the default dns settings of the CentOS 8 operating system, we will need to edit the /etc/resolv.conf file.

Open the /etc/resolv.conf file and append the following contents to it.

Nameserver 192.168.1

1 is the localhost dns server of our CentOS 8 operating system. This is required to provide internet connectivity.

Name server is defined as the IP address of the dns server. It is not advisable to use the IP address of the router or modem, as they will interfere with the internet connectivity of the CentOS 8 operating system.

We have added the name server details to the /etc/resolv. It is advisable to use an un-interruptible power supply (UPS) to prevent the loss of dns entries in the event of a power failure.

Configure the dnsmasq. To resolve names from the dns server, we will need to install the dnsmasq package.