Update or update ubuntu 16.04

[Samrat Rao]

Hi,

I've been given a 16.04 desktop. I have admin rights over it.


I want to update (or upgrade?) the system and not move to a newer version. So which command should i issue:
sudo apt-get update or
sudo apt-get upgrade?
How do i check if the repositories are correctly configured? Any settings i have to make to avoid wrong packages from getting installed?
I am having frequent power cuts, so i want to install a few packages at a time. Any recommended path for this, that is, any packages that first need to be installed or installation procedure that wont break the system due to interruptions.


Thanks.

[howefield]

The first command will update the information your sources list has, making the system aware of what packages can be updated, the second will update those packages to the newer versions. Regular updating generally only takes a few minutes but your first one may some longer depending on when last the machine was updated. When you do the upgrade command you will be told how large the download will be and be given an option to proceed or cancel.

Perhaps it might be best to configure the machine not to auto update given your power issues in order that you can control when they are done.

Posting the output of the following command will allow others to tell you if your repositories look incorrect.


egrep -v '^#|^ *$' /etc/apt/sources.list /etc/apt/sources.list.d/*

[Samrat Rao]

Hi,

Thanks for the quick reply. So
sudo apt-get upgrade will not take me to a newer version of ubuntu.

As you suggested, I have configured the settings only to display messages when updates are available and not install them.


egrep -v '^#|^ *$' /etc/apt/sources.list /etc/apt/sources.list.d/*


/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial main restricted
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial-updates main restricted
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial universe
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial-updates universe
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial multiverse
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial-updates multiverse
/etc/apt/sources.list:deb http://archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
/etc/apt/sources.list:deb http://archive.canonical.com/ubuntu xenial partner
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu xenial-security main restricted
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu xenial-security universe
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu xenial-security multiverse
/etc/apt/sources.list.d/google-chrome.list:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
/etc/apt/sources.list.d/xenial-dell.list:deb http://dell.archive.canonical.com/updates/ xenial-dell public
/etc/apt/sources.list.d/xenial-dell.list:deb-src http://dell.archive.canonical.com/updates/ xenial-dell public]

I'm getting this error with sudo apt-get update:


Ign:230 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/multiverse DEP-11 64x64 Icons
Err:174 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
Connection failed [IP: 91.189.88.162 80]
Err:175 http://archive.ubuntu.com/ubuntu xenial/main i386 Packages
Connection failed [IP: 91.189.88.149 80]
Ign:176 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/main Translation-en
Ign:177 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/main amd64 DEP-11 Metadata
Ign:178 http://archive.ubuntu.com/ubuntu xenial/main DEP-11 64x64 Icons
Err:179 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/restricted amd64 Packages
Connection failed [IP: 91.189.88.161 80]
Err:180 http://archive.ubuntu.com/ubuntu xenial/restricted i386 Packages
Connection failed [IP: 91.189.88.152 80]
Ign:181 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/restricted Translation-en
Ign:182 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/restricted amd64 DEP-11 Metadata
Err:183 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
Connection failed [IP: 91.189.88.161 80]
Err:184 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
Err:193 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
Connection failed [IP: 91.189.88.161 80]
Err:194 http://archive.ubuntu.com/ubuntu xenial-updates/main i386 Packages
Connection failed [IP: 91.189.88.152 80]
Ign:195 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-updates/main Translation-en
Ign:196 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata
Ign:197 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons
Err:198 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 Packages
Connection failed [IP: 91.189.88.149 80]
Err:199 http://archive.ubuntu.com/ubuntu xenial-updates/restricted i386 Packages
Connection failed [IP: 91.189.88.162 80]
Ign:200 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-updates/restricted Translation-en
Ign:201 http://archive.ubuntu.com/ubuntu xenial-updates/restricted amd64 DEP-11 Metadata
Err:202 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
Connection failed [IP: 91.189.88.149 80]
Err:203 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages
Connection failed [IP: 91.189.88.162 80]
Err:212 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 Packages
Connection failed [IP: 91.189.88.162 80]
Err:213 http://archive.ubuntu.com/ubuntu xenial-backports/main i386 Packages
Connection failed [IP: 91.189.88.149 80]
Ign:214 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/main Translation-en
Ign:215 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 DEP-11 Metadata
Ign:216 http://archive.ubuntu.com/ubuntu xenial-backports/main DEP-11 64x64 Icons
Err:217 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/restricted amd64 Packages
Connection failed [IP: 91.189.88.161 80]
Err:218 http://archive.ubuntu.com/ubuntu xenial-backports/restricted i386 Packages
Connection failed [IP: 91.189.88.152 80]
Ign:219 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/restricted Translation-en
Ign:220 http://archive.ubuntu.com/ubuntu xenial-backports/restricted amd64 DEP-11 Metadata
Err:221 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 Packages
Connection failed [IP: 91.189.88.161 80]
Err:222 https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://archive.ubuntu.com/ubuntu xenial-backports/universe i386 Packages
Connection failed [IP: 91.189.88.152 80]
Reading package lists... Done
W: The repository 'http://dl.google.com/linux/chrome/deb stable Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://archive.canonical.com/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://security.ubuntu.com/ubuntu xenial-security Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://dell.archive.canonical.com/updates xenial-dell Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/main/binary-amd64/Packages Connection failed [IP: 216.58.197.46 80]
E: Failed to fetch http://archive.canonical.com/ubuntu/dists/xenial/partner/binary-amd64/Packages Connection failed [IP: 91.189.92.191 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/main/binary-amd64/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Failed to fetch http://archive.canonical.com/ubuntu/dists/xenial/partner/binary-i386/Packages Connection failed [IP: 91.189.92.150 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/main/binary-i386/Packages Connection failed [IP: 91.189.91.23 80]
E: Failed to fetch https://10.10.10.10:6082/php/uid.php?vsys=1&rule=0&url=http://dell.archive.canonical.com/updates/dists/xenial-dell/public/source/Sources Connection failed
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/main/binary-amd64/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://dell.archive.canonical.com/updates/dists/xenial-dell/public/binary-amd64/Packages Connection failed
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/main/binary-i386/Packages Connection failed [IP: 91.189.88.149 80]
E: Failed to fetch http://dell.archive.canonical.com/updates/dists/xenial-dell/public/binary-i386/Packages Connection failed
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/restricted/binary-amd64/Packages Connection failed [IP: 91.189.91.23 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/restricted/binary-i386/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/binary-amd64/Packages Connection failed [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/restricted/binary-i386/Packages Connection failed [IP: 91.189.88.152 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/universe/binary-amd64/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/xenial-security/universe/binary-i386/Packages Connection failed [IP: 91.189.91.26 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-amd64/Packages Connection failed [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-i386/Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/main/binary-amd64/Packages Connection failed [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/main/binary-i386/Packages Connection failed [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/restricted/binary-amd64/Packages Connection failed [IP: 91.189.88.149 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/restricted/binary-i386/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/universe/binary-amd64/Packages Connection failed [IP: 91.189.88.149 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/universe/binary-i386/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/main/binary-amd64/Packages Connection failed [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/main/binary-i386/Packages Connection failed [IP: 91.189.88.149 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/restricted/binary-amd64/Packages Connection failed [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/restricted/binary-i386/Packages Connection failed [IP: 91.189.88.152 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/universe/binary-amd64/Packages Connection failed [IP: 91.189.88.161 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/universe/binary-i386/Packages Connection failed [IP: 91.189.88.152 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

Is is fine to update?

[Impavidus]

sudo apt-get update refreshes the list of available packages, making your system aware of updates.
sudo apt-get upgrade downloads and installs the available upgrades, but will never install a new package or uninstall something.
sudo apt-get dist-upgrade downloads and installs all available upgrades, even when that means that some packages have to be removed or new packages have to be installed. You often need this for kernel upgrades.
sudo apt upgrade uses the somewhat higher-level apt instead of apt-get and downloads and installs all available upgrades, even when that means installing new packages, but will not remove any packages.You can use that for kernel upgrades too.

Finally, sudo do-release-upgrade is what will upgrade your entire system to a new release of Ubuntu.

The package manager can usually recover from interuptions without much difficulty. Whenever an interuption happened, try
sudo apt install -fto finish the upgrade. Sometimes you may first need
sudo dpkg --configure -a

[Samrat Rao]

Hi Impavidus,

Thanks for your explanations.

But i'm unable to download any packages since I am getting the error i listed in post #3. I'm from India and i tried using both Main Server and Server from India. Neither is working. I didn't set up a proxyserver for my browser so there may not be an issue with proxy settings.