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How to add a package not found by apt-get(debian, ubuntu both)

First things first

If you use apt-get install to install with a package name, it may not be registered in the repository by default and cannot be installed.
In this article, I'll use an example of installing iozone3.

Verification Environment

Debian GNU/Linux 8

Find out where the target package is located in the repository

First try to install from the list of default packages

First, try to install from the list of default packages and make sure you get a "package not found" error

> apt-get install iozone3
Reading package lists... Done...
Building dependency tree
Reading state information... Done...
E: Unable to locate package iozone3

Finding a repository with a package

If you put the package name in the search window, it will tell you which package it is in.

For Debian, click here

For Ubuntu, click here.

Debian's izone3 is in a non-free repository

Here's how to add a non-free repository to your list of repositories

Add a repository

First, check the list of the current repositories

> cat /etc/apt/sources.list
deb jessie main
deb jessie-updates main
deb jessie/updates main

Make sure there is no non-free

Install the apt-add-repository

Install the apt-add-repository package for adding a repository

# Use apt-file to find out where apt-add-repository is on the command line
> apt-get install apt-file
> apt-file update
> apt-file search apt-add-repository

# apt-add-repository is included in software-properties-common, so you can install the whole thing
> apt-get install -y software-properties-common

Adding a non-free repository

I'll add the non-free repository with the izone3 package I just examined to the list of repositories

> apt-add-repository non-free

Checking the repository list, you can see the non-free has been added to the last line

> cat /etc/apt/sources.list
deb jessie main
deb jessie-updates main
deb jessie/updates main
deb jessie non-free

Installation of iozone3

I confirmed that I can install it normally using apt-get.

> apt-get update
> apt-get install -y iozone3

Confirm that the installation has been completed by displaying the version

> iozone -v
       'Iozone' Filesystem Benchmark Program

        Version $Revision: 3.429 $
    Compiled for 64 bit mode.

       Original Author: William Norcott (
               4 Dunlap Drive
               Nashua, NH 03060

       Enhancements: don capps (
              7417 Crenshaw.
              Plano, TX 75025

  Copyright 1991, 1992, 1994, 1998, 1999, 2002 William D. Norcott

  License to freely use and distribute this software is hereby granted
  By the author, subject to the condition that this copyright notice
  The author retains the exclusive right to publish
  The derivative works are based on this work, including, but not limited to,
  revised versions of this work

  Other contributors:

  Don Capps (Network Appliance)

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