cifer command not found

Introduction

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

cifer: command not found

or when using sudo you get the following error message

sudo: cifer: command not found

Solutions to cifer: command not found

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

In Ubuntu cifer is provided by cifer package.

cifer is:

Cifer provides many functions designed to aid in cracking classical ciphers; a group of ciphers used historically, but which have now fallen into disuse because of their suceptability to ciphertext-only attacks. In general, they were designed and implemented by hand, and operate on an alphabet of letters (such as [A-Z]).

It operates using text files as input and output, and can perform both brute force and other, more sophisticated, attacks against many classic encryption schemes. In addition, it provides many utilities such as frequency analysis and automated encryption/decryption of texts.

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

sudo apt-get -y install cifer

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

You can also use apt command to install cifer.

sudo apt -y install cifer

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

sudo aptitude install cifer

Summary

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