postcat command not found

Introduction

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

postcat: command not found

or when using sudo you get the following error message

sudo: postcat: command not found

Solutions to postcat: command not found

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

In Ubuntu postcat is provided by postfix package.

postfix is:

Postfix is Wietse Venema’s mail transport agent that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.

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

sudo apt-get -y install postfix

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

You can also use apt command to install postfix.

sudo apt -y install postfix

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

sudo aptitude install postfix

Summary

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