for_each command not found

Introduction

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

for_each: command not found

or when using sudo you get the following error message

sudo: for_each: command not found

Solutions to for_each: command not found

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

In Ubuntu for_each is provided by mrtrix3 package.

mrtrix3 is:

Set of tools to perform diffusion-weighted MRI white matter tractography of the brain in the presence of crossing fibres, using Constrained Spherical Deconvolution, and a probabilisitic streamlines algorithm. Magnetic resonance images in DICOM, ANALYZE, or uncompressed NIfTI format are supported.

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

sudo apt-get -y install mrtrix3

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

You can also use apt command to install mrtrix3.

sudo apt -y install mrtrix3

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

sudo aptitude install mrtrix3

Summary

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