relion_image_handler command not found

Introduction

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

relion_image_handler: command not found

or when using sudo you get the following error message

sudo: relion_image_handler: command not found

Solutions to relion_image_handler: command not found

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

In Ubuntu relion_image_handler is provided by relion package.

relion is:

RELION (for REgularised LIkelihood OptimisatioN) is a stand-alone computer program for Maximum A Posteriori refinement of (multiple) 3D reconstructions or 2D class averages in cryo-electron microscopy.

RELION provides a GUI, several command-line tools in parallel (MPI) and serial versions, optionally with CUDA/GPU support.

relion provides the serial and parallel (MPI) command-line tools without CUDA/GPU support.

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

sudo apt-get -y install relion

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

You can also use apt command to install relion.

sudo apt -y install relion

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

sudo aptitude install relion

Summary

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