[xubuntu-users] How to check burnt iso

[Ralf Mardorf]

Hi,

for mirrors take a look at:
https://xubuntu.org/download/

Then for example:
http://ftp.uni-kl.de/pub/linux/ubuntu-dvd/xubuntu/releases/
http://ftp.uni-kl.de/pub/linux/ubuntu-dvd/xubuntu/releases/24.04.2/release/

Those Ubuntu instructions work also for Xubuntu and other flavours:

https://ubuntu.com/tutorials/how-to-verify-ubuntu#3-download-checksums-and-signatures
https://ubuntu.com/tutorials/how-to-verify-ubuntu#4-retrieve-the-correct-signature-key
https://ubuntu.com/tutorials/how-to-verify-ubuntu#5-verify-the-sha256-checksum
https://ubuntu.com/tutorials/how-to-verify-ubuntu#6-check-the-iso

Alternatively you can use the attached script I wrote in 2016, it does
all steps automagically. But first you need to make it executable by
running    chmod a+x luamd64_1610.sh    Running it looks like this:

      $ ./luamd64_1610.sh xubuntu 24.04.2 
      
      Usage: ./luamd64_1610.sh [FLAVOUR [RELEASE]]
      'luamd64' gets the 'l'atest 'u'buntu desktop flavour 'amd64' iso for you.
      
        The default flavour is ubuntu-mate.
        The default release is 16.10.
      
      Other desktop flavours available for at least 16.10
      
        ubuntu
        kubuntu
        lubuntu
        ubuntu-gnome
        ubuntukylin
        ubuntustudio
        xubuntu
      
      Root can't run this script.
      
      
      mkdir /tmp/xubuntu-24.04.2-desktop-amd64-20250419-190924
      
      
      Press a key to continue 
      
      
      
      cd /tmp/xubuntu-24.04.2-desktop-amd64-20250419-190924
      
      
      Press a key to continue 
      
      
      
      wget http://cdimage.ubuntu.com/xubuntu/releases/24.04.2/release/xubuntu-24.04.2-desktop-amd64.iso http://cdimage.ubuntu.com/xubuntu/releases/24.04.2/release/SHA256SUMS http://cdimage.ubuntu.com/xubuntu/releases/24.04.2/release/SHA256SUMS.gpg
      
      
      Press a key to continue 
      
      
      --2025-04-19 19:10:17--  http://cdimage.ubuntu.com/xubuntu/releases/24.04.2/release/xubuntu-24.04.2-desktop-amd64.iso
      Resolving cdimage.ubuntu.com (cdimage.ubuntu.com)... 185.125.190.40, 91.189.91.123, 91.189.91.124, ...
      Connecting to cdimage.ubuntu.com (cdimage.ubuntu.com)|185.125.190.40|:80... connected.
      HTTP request sent, awaiting response... 200 OK
      Length: 4242739200 (4.0G) [application/x-iso9660-image]
      Saving to: ‘xubuntu-24.04.2-desktop-amd64.iso’
      
      xubuntu-24.04.2-desktop-amd64.iso [snip] 70m 12s
      
and so on. In 70 minutes I can say, if the script lines related to the
gpg key need a fix or if they're still ok in 2025.

Regards,
Ralf
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