rtail command not found

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

Introduction

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

rtail: command not found

or when using sudo you get the following error message

sudo: rtail: command not found

In Ubuntu rtail is provided by ruby-file-tail package.

ruby-file-tail is:

Small ruby library that allows it to “tail” files in Ruby, including following a file that still is growing, like the UNIX command ’tail -f’ can.

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

sudo apt-get -y install ruby-file-tail

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

You can also use apt command to install ruby-file-tail.

sudo apt -y install ruby-file-tail

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

sudo aptitude install ruby-file-tail

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