voilà :
elaaoussa@ayoub-hp-compaq-6735b:~$ sudo apt update
Atteint:1 [url]http://archive.canonical.com/ubuntu[/url] zesty InRelease
Ign:2 [url]http://archive.ubuntu.com/ubuntu[/url] zesty InRelease
Atteint:3 [url]http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu[/url] zesty InRelease
Ign:4 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-updates InRelease
Ign:5 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-backports InRelease
Ign:6 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-security InRelease
Err:7 [url]http://archive.ubuntu.com/ubuntu[/url] zesty Release
404 Not Found [IP : 91.189.88.162 80]
Err:8 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-updates Release
404 Not Found [IP : 91.189.88.162 80]
Err:9 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-backports Release
404 Not Found [IP : 91.189.88.162 80]
Err:10 [url]http://archive.ubuntu.com/ubuntu[/url] zesty-security Release
404 Not Found [IP : 91.189.88.162 80]
Lecture des listes de paquets... Fait
E: The repository 'http://archive.ubuntu.com/ubuntu zesty Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-updates Release' does no longer have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-backports Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://archive.ubuntu.com/ubuntu zesty-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
elaaoussa@ayoub-hp-compaq-6735b:~$ sudo apt full-upgrafde
E: L'opération full-upgrafde n'est pas valable
