When I run apt-get update
it gives following output:
root@V211:~# apt-get update
Ign:1 http://archive.ubuntu.com/ubuntu artful InRelease
Ign:2 http://archive.ubuntu.com/ubuntu artful-updates InRelease
Ign:3 http://archive.ubuntu.com/ubuntu artful-security InRelease
Err:4 http://archive.ubuntu.com/ubuntu artful Release
404 Not Found [IP: 91.189.88.31 80]
Err:5 http://archive.ubuntu.com/ubuntu artful-updates Release
404 Not Found [IP: 91.189.88.31 80]
Err:6 http://archive.ubuntu.com/ubuntu artful-security Release
404 Not Found [IP: 91.189.88.31 80]
Reading package lists... Done
E: The repository 'http://archive.ubuntu.com/ubuntu artful Release' no longer has 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 artful-updates Release' no longer has 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 artful-security Release' no longer has 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.
/etc/apt/sources.list
contains following lines:
deb http://archive.ubuntu.com/ubuntu artful main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu artful-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu artful-security main restricted universe multiverse
Please let me know how to fix this issue.