ngramperplexity command not found

Introduction

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

ngramperplexity: command not found

or when using sudo you get the following error message

sudo: ngramperplexity: command not found

Solutions to ngramperplexity: command not found

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

In Ubuntu ngramperplexity is provided by libngram-tools package.

libngram-tools is:

The OpenGrm NGram library is used for making and modifying n-gram language models encoded as weighted finite-state transducers (FSTs). The library includes operations for counting, smoothing, pruning, applying, and evaluating n-gram language models.

This package provides the command line tools.

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

sudo apt-get -y install libngram-tools

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

You can also use apt command to install libngram-tools.

sudo apt -y install libngram-tools

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

sudo aptitude install libngram-tools

Summary

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