Jigdo how does Debian download manager work?


Jigsaw Download, or jigdo for short, is meant to be the main way to distribute Debian CD images in the future. At the moment, the system is working, but it is not yet very comfortable to use, because the download management application is not complete.

Because jigdo is better than direct download

Because it's faster! For a variety of reasons, there are far fewer mirrors for CD images than for Debian distribution packages. As a result, downloading from a mirror for a CD will not only be far away from you, but it will also be overloaded, especially if you try to download an ISO immediately after release.

Additionally, some types of images are not available as full .iso because there is not enough space to host them on the servers.

Of course, a "normal" Debian mirror does not contain CD images, so how do you download them with jigdo?

Jigdo downloads all the files on the CD / DVD individually. In the next step, all these files are gathered into one large file which is an exact copy of the ISO image of the CD / DVD. However, all this is happening in the background.

Let's see how it is done without many commands in the terminal:

You will need to download the application first.

  jigdo-0.8.0.tar.xz 2019-11-19 15:44 562K  
  jigdo-0.8.0.tar.xz.sig 2019-11-19 15:46 566  
  jigdo-win-0.8.0.zip 2019-11-19 15:29 1.6M  
  jigdo-win-0.8.0.zip.sig 2019-11-19 15:30 566  
  older-versions / 2019-11-19 15:43  

Download jigdo-0.8.0.tar.xz and extract on your desktop, or wherever you wish.

Open a terminal inside the jigdo-0.8.0 folder and run it jigdo-lite

Open its download page Debian in your browser and select the ISO you want. But what we are interested in is not the ISO but the .jigdo file. So to download debian-10.6.0-amd64-DVD-1.iso copy its link debian-10.6.0-amd64-DVD-1.jigdo

Then paste the link to the terminal you have opened:

When it reaches the point Files to scan just press Enter. Then you have to enter the location of the server from where you want to download. Make sure it is in your country (gr) for faster download.

As shown in the following image with the command gr will appear some links with repositories of distribution in Greece:

Copy and paste the link to the repository you want and press Enter to start the download.

The jigdo application will start downloading packages contained in the ISO

and saves them in the folder that contains jigdo-lite

Let the process complete, and at the end you will have the ISO in the above folder. The packages that the application will download to create the ISO can be found in the debian-10.6.0-amd64-DVD-1.iso.list file.

and the ISO file

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