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Often I have to use a live cd installation of Ubuntu like the 20.04 lts.

I found that there are lot of tools and packages that are missing like brasero and wodim

However I'm unable to always access the mirrors for downloading them.

I was thinking instead of downloading them on a flash drive and just connect it open a terminal and do something like

dpkg -i *.deb

Then I realized that each package has lot of dependency.

How can I be sure that I download all the packages I need including the dependencies so that I can install everything I need from the flash drive?

Given my case of Ubuntu 20 what is the archive address for the packages?

I know that I could include the packages in the Ubuntu live dvd but this is not the target of the question.

David DE
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user3450548
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2 Answers2

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To list the dependencies of a package

apt-cache depends <package-name>

to download a package only, without installing it:

sudo apt-get install --reinstall --download-only [package-name]

Downloaded packages are found in /var/cache/apt/archives

Note that if you copy a set of packages to a USB drive, and any are later installed from the USB drive using sudo dpkg [package-name].deb, you might be installing an older version. You would not get any warning that a later version exists in the official repositories, unless the application itself checks for updates.

Patrick Callahan
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See my answers titled: How to create CD/DVD .ISO repository of .deb packages? and How to use a .iso image as a CD-ROM/DVD Repository? And how to install packages using the repository? . To maintain a complete repository without dependency issues for a version say 24.04, I'd copy all the apps installed and updates installed manually at an accessible location. For that I need to copy the contents of /var/cache/apt/archives/ directory when updates were made/apps installed. Copying all those over time will accumulate different versions of same package, from which you can create a repo of the latest with help of answers I've linked previously.

rusty
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