cow command not found

Introduction

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

cow: command not found

or when using sudo you get the following error message

sudo: cow: command not found

Solutions to cow: command not found

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

In Ubuntu cow is provided by fl-cow package.

fl-cow is:

Fl-cow allows you to utilise hard links to save disk space by causing hard-linked files to be copied rather than overwritten as they are changed.

This is useful for making changes to large source trees while keeping a copy of the original tree to generate patches from. Also, if you are using the Arch revision control system with working copies hard-linked to a revision library, using fl-cow can prevent revision library corruption.

Fl-cow is an LD_PRELOAD hack, not a kernel patch.

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

sudo apt-get -y install fl-cow

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

You can also use apt command to install fl-cow.

sudo apt -y install fl-cow

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

sudo aptitude install fl-cow

Summary

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