How to install nslookup on Ubuntu

nslookup is installed by default on most systems, including Windows, MacOS and almost all Linux distros. If it's not or you have uninstalled nslookup by mistake, you can reinstall it.

1. Update your system package list first:

    $ sudo apt update

   After the update is done, the success message should be:

    Reading package lists... Done
    Building dependency tree... Done
    Reading state information... Done
    62 packages can be upgraded. Run apt list --upgradable to see them.

   

2. Install the latest version available of nslookup tool that's available through the dnsutils package:

    $ sudo apt install dnsutils

   If it's already installed, the warning message should be:

    Reading package lists... Done
    Building dependency tree
    Reading state information... Done
    Note, selecting 'bind9-dnsutils' instead of 'dnsutils'
    bind9-dnsutils is already the newest version (1:9.16.1-Qubuntu2).
    bind9-dnsutils set to manually installed.
    0 upgraded, @ newly installed, 0 to remove and 0 not upgraded.