ospcat command not found

Introduction

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

ospcat: command not found

or when using sudo you get the following error message

sudo: ospcat: command not found

Solutions to ospcat: command not found

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

In Ubuntu ospcat is provided by opensp package.

opensp is:

This package is a collection of SGML/XML tools called OpenSP. It is a fork from James Clark’s SP suite.

These tools are used to parse, validate, and normalize SGML and XML files. The central programs included in this package are ‘onsgmls’, which replaces sgmls, ‘ospam’, ‘ospent’, ‘osgmlnorm’, and ‘osx’.

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

sudo apt-get -y install opensp

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

You can also use apt command to install opensp.

sudo apt -y install opensp

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

sudo aptitude install opensp

Summary

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