netsed command not found

In this troubleshooting guide we learn how to fix netsed command not found error message

Introduction

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

netsed: command not found

or when using sudo you get the following error message

sudo: netsed: command not found

Solutions to netsed: command not found

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

In Ubuntu netsed is provided by netsed package.

netsed is:

NetSED is a small and handy utility designed to alter, in real time, the contents of packets forwarded through your network. It is really useful for network packet alteration, forging, or manipulation. NetSED supports:

  • black-box protocol auditing - whenever there are two or more proprietary boxes communicating using some undocumented protocol. By enforcing changes in ongoing transmissions, you will be able to test if the examined application can be claimed secure;
  • fuzz generating experiments, integrity tests - whenever you do stability tests of an application to see how it cares for data integrity;
  • other common use-cases: deceptive transfers, content filtering, protocol conversion - whatever best fits your task at hand.

It ideally complements a tool suite based on ngrep, netcat, and tcpdump.

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

sudo apt-get -y install netsed

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

You can also use apt command to install netsed.

sudo apt -y install netsed

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

sudo aptitude install netsed

Summary

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