rtd command not found

Introduction

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

rtd: command not found

or when using sudo you get the following error message

sudo: rtd: command not found

Solutions to rtd: command not found

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

In Ubuntu rtd is provided by skycat package.

skycat is:

The ESO/Starlink Skycat tool combines the image display capabilities of the RTD (Real-Time Display) with a set of classes for accessing astronomical catalogs locally and over the network using HTTP. The tool allows you to view FITS images from files or from the Digitized Sky Survey (DSS).

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

sudo apt-get -y install skycat

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

You can also use apt command to install skycat.

sudo apt -y install skycat

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

sudo aptitude install skycat

Summary

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