Delve into the Debian package ecosystem, learn about repositories, package tools, and build packages using the fpm tool, enhancing your deployment skills and integration efficiency.

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Packages are fundamental units of software deployment in Debian and related operating systems. Packaging enables users to deploy your packages using the built-in tools of their operating system.

In this course, you’ll learn about the environment that Debian packages live in, including repositories, package management installation tools, source and binary packages, and the “upstream” concept. Then you’ll learn about the structure and metadata of packages and an efficient way to build Debian packages using the fpm tool. You’ll also learn to use the Debian Build System, including the tools used to create package skeletons and multiple packages from a single code base. You’ll finish with an introduction to repository and package management and integrity.

By the end of this course, you’ll have learned about the Debian package ecosystem and several ways to build and package. This will enable you to seamlessly integrate your packages into existing infrastructure and take your deployment skills to the next level.

Building Debian Packages from the Ground Up

import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


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Typescript React

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# Explanation

* In the `Makefile`, we use the install target to install the `calculate-average` binary file and the `scores` data file in the `debian/<package-name>` directory.

* We write the `debian/control` file, which contains the source package name, multiple binary packages name, and other metadata, and we made no changes to the `rules` file.

* In the `calculate-average-data.install` file, we list the path `usr/share` where we want the `scores` file.

* In the `calculate-average.install` file, we give the path `usr/bin`. That's where we want the `calculate-average` binary file.

* We run the command `chmod -x <filename>` for both the files `calculate-average.install` and `calculate-average-data.install` to ensure that they are not executable.

* In the `calculate-average` directory, we run the command `dpkg-buildpackage -b -us -uc` to build the packages `calculate-average_0.1_amd64.deb` and `calculate-average-data_0.1_all.deb`

# Installation

After these editorial changes, perform the following tasks on command-line:

1. In the root directory, first install the data package using the `sudo dpkg -i ../calculate-average-data_0.1_all.deb` command, and then install the `calculate-average` package using `sudo dpkg -i ../calculate-average_0.1_amd64.deb`.

2. Our packages are installed successfully. Now, type the command `calculate-average` to calculate the average of the numbers in the file `score`.


Look at the solution for the “Build Multiple Packages Using dh_install” challenge.

Solution: Build Multiple Packages Using dh_install

Introduction

Debian Packages in Context

What's Inside a Debian Package

Quick Package Construction with fpm

The Debian Build System

Quick Debian Packaging and Multipackage Builds

Repository Management

Conclusion

Appendix

Solution: Build Multiple Packages Using dh_install

Explanation