tthsum command not found

Introduction

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

tthsum: command not found

or when using sudo you get the following error message

sudo: tthsum: command not found

Solutions to tthsum: command not found

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

In Ubuntu tthsum is provided by tthsum package.

tthsum is:

tthsum generates or checks TTH checksums (root of the THEX hash tree). The Merkle Hash Tree, invented by Ralph Merkle, is a hash construct that exhibits desirable properties for verifying the integrity of files and file subranges in an incremental or out-of-order fashion. tthsum uses the Tiger hash algorithm for both the internal and the leaf nodes.

The specification of the THEX algorithm is at: http://www.open-content.net/specs/draft-jchapweske-thex-02.html

The specification of the Tiger hash algorithm is at: http://www.cs.technion.ac.il/~biham/Reports/Tiger/

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

sudo apt-get -y install tthsum

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

You can also use apt command to install tthsum.

sudo apt -y install tthsum

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

sudo aptitude install tthsum

Summary

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