field command not found

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

Introduction

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

field: command not found

or when using sudo you get the following error message

sudo: field: command not found

Solutions to field: command not found

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

In Ubuntu field is provided by rheolef package.

rheolef is:

Rheolef is a computer environment that serves as a convenient laboratory for computations in applied mathematics involving finite element-like methods. It provides a set of commands and C++ algorithms and containers.

Most basically, containers cover the classic graph data structure for sparse matrix formats and finite element meshes. At a higher level of abstraction, they can handle approximate finite element spaces, discrete fields. Flexible and powerful expressions are used to specify bilinear forms.

Current applications include:

  • massively distributed memory finite element environment, based on MPI;
  • elasticity, Stokes and Navier-Stokes problems in 2D and 3D;
  • complex fluids applications: viscoplasticity, viscoelasticity, wall slip;
  • nonlinear problems with fixed-point, Newton and continuation methods;
  • high order polynomials, mixed elements and discontinuous Galerkin methods;
  • auto-adaptive mesh approaches;
  • axisymmetric problems;
  • multi-regions and variable coefficient problems.

This package provides the rheolef commands. These support input and output in various file formats for mesh-generators and numerical data visualization systems such as paraview, and gnuplot.

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

sudo apt-get -y install rheolef

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

You can also use apt command to install rheolef.

sudo apt -y install rheolef

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

sudo aptitude install rheolef

Summary

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