rkill command not found

Introduction

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

rkill: command not found

or when using sudo you get the following error message

sudo: rkill: command not found

Solutions to rkill: command not found

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

In Ubuntu rkill is provided by pslist package.

pslist is:

pslist is a simple utility to list the process IDs (PIDs) of a process and all its children, and its children’s children, and so on. If invoked with a command name which ends in ‘kill’, it sends a signal to a selected group of processes. If invoked with a command name which ends in ‘renice’, it sets the nice level of the selected group of processes.

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

sudo apt-get -y install pslist

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

You can also use apt command to install pslist.

sudo apt -y install pslist

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

sudo aptitude install pslist

Summary

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