adnsheloex command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

adnsheloex: command not found

or when using sudo you get the following error message

sudo: adnsheloex: command not found

Solutions to adnsheloex: command not found

How To Fix adnsheloex: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu adnsheloex is provided by adns-tools package.

adns-tools is:

adns is a DNS resolver. In contrast with many existing interfaces, gethostbyname et al and libresolv, it can be used in an asynchronous, non-blocking manner. Many queries can be handled simultaneously.

This package contains useful utilities for IP address resolving, fast bulk logfile processing, and testing.

To fix this problem, we can install more using the command below.

sudo apt-get -y install adns-tools

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install adns-tools.

sudo apt -y install adns-tools

Or if you have aptitude installed you can use the following command.

sudo aptitude install adns-tools

Summary

In this tutorial we learn how to fix adnsheloex command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.