Updating the apt-get command in the terminal
I have only recently installed ubuntu 18.04 on one of my machines as a means of becoming competent in using a Linux system, when I attempt to use the command
sudo apt-get update
I receive an error message saying
Could not resolve 'security.ubuntu.com'
and likewise for all four of the main repositories. If it is necessary for me to print the exact output just let me know..
UPDATED:
I was able to update upon reboot of my system, however only partially, receiving the following error message in my output:
E: The repository 'http://security.ubuntu.com bionic-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.
command-line apt updates
edited 2 days ago
Sourav Ghosh
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have only recently installed ubuntu 18.04 on one of my machines as a means of becoming competent in using a Linux system, when I attempt to use the command
sudo apt-get update
I receive an error message saying
Could not resolve 'security.ubuntu.com'
and likewise for all four of the main repositories. If it is necessary for me to print the exact output just let me know..
UPDATED:
I was able to update upon reboot of my system, however only partially, receiving the following error message in my output:
E: The repository 'http://security.ubuntu.com bionic-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.
command-line apt updates
edited 2 days ago
Sourav Ghosh
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02
add a comment |
I have only recently installed ubuntu 18.04 on one of my machines as a means of becoming competent in using a Linux system, when I attempt to use the command
sudo apt-get update
I receive an error message saying
Could not resolve 'security.ubuntu.com'
and likewise for all four of the main repositories. If it is necessary for me to print the exact output just let me know..
UPDATED:
I was able to update upon reboot of my system, however only partially, receiving the following error message in my output:
E: The repository 'http://security.ubuntu.com bionic-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.
command-line apt updates
edited 2 days ago
Sourav Ghosh
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have only recently installed ubuntu 18.04 on one of my machines as a means of becoming competent in using a Linux system, when I attempt to use the command
sudo apt-get update
I receive an error message saying
Could not resolve 'security.ubuntu.com'
and likewise for all four of the main repositories. If it is necessary for me to print the exact output just let me know..
UPDATED:
I was able to update upon reboot of my system, however only partially, receiving the following error message in my output:
E: The repository 'http://security.ubuntu.com bionic-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.
command-line apt updates
command-line apt updates
edited 2 days ago
Sourav Ghosh
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 days ago
Sourav Ghosh
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 days ago
Sourav Ghosh
39729
edited 2 days ago
Sourav Ghosh
39729
edited 2 days ago
Sourav Ghosh
39729
39729
asked Dec 29 '18 at 13:55
Adam
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Dec 29 '18 at 13:55
Adam
1085
asked Dec 29 '18 at 13:55
Adam
1085
1085
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Adam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02
add a comment |
2
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02
2
2
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02
add a comment |
1 Answer
1
active
oldest
votes
Could not resolve 'security.ubuntu.com means the system cannot find to which IP address security.ubuntu.com is pointing to. This means your DNS is broken.
To fix it, make sure of a few things:
- Your linux has an ip address.
- If you have an ip address, you are connected to the internet (ping to 8.8.8.8).
- If you can ping to 8.8.8.8, try ping to google.com
- If step 2 worked but step 3 didn`t, you need to fix your dns. Make sure that in the file /etc/resolv.conf there's a valid dns server.
I'm using umbrella DNS servers:
cat /etc/resolv.conf
nameserver 208.67.220.220
nameserver 208.67.222.222
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
add a comment |
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1 Answer
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1 Answer
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votes
Could not resolve 'security.ubuntu.com means the system cannot find to which IP address security.ubuntu.com is pointing to. This means your DNS is broken.
To fix it, make sure of a few things:
- Your linux has an ip address.
- If you have an ip address, you are connected to the internet (ping to 8.8.8.8).
- If you can ping to 8.8.8.8, try ping to google.com
- If step 2 worked but step 3 didn`t, you need to fix your dns. Make sure that in the file /etc/resolv.conf there's a valid dns server.
I'm using umbrella DNS servers:
cat /etc/resolv.conf
nameserver 208.67.220.220
nameserver 208.67.222.222
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
add a comment |
Could not resolve 'security.ubuntu.com means the system cannot find to which IP address security.ubuntu.com is pointing to. This means your DNS is broken.
To fix it, make sure of a few things:
- Your linux has an ip address.
- If you have an ip address, you are connected to the internet (ping to 8.8.8.8).
- If you can ping to 8.8.8.8, try ping to google.com
- If step 2 worked but step 3 didn`t, you need to fix your dns. Make sure that in the file /etc/resolv.conf there's a valid dns server.
I'm using umbrella DNS servers:
cat /etc/resolv.conf
nameserver 208.67.220.220
nameserver 208.67.222.222
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
add a comment |
Could not resolve 'security.ubuntu.com means the system cannot find to which IP address security.ubuntu.com is pointing to. This means your DNS is broken.
To fix it, make sure of a few things:
- Your linux has an ip address.
- If you have an ip address, you are connected to the internet (ping to 8.8.8.8).
- If you can ping to 8.8.8.8, try ping to google.com
- If step 2 worked but step 3 didn`t, you need to fix your dns. Make sure that in the file /etc/resolv.conf there's a valid dns server.
I'm using umbrella DNS servers:
cat /etc/resolv.conf
nameserver 208.67.220.220
nameserver 208.67.222.222
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Could not resolve 'security.ubuntu.com means the system cannot find to which IP address security.ubuntu.com is pointing to. This means your DNS is broken.
To fix it, make sure of a few things:
- Your linux has an ip address.
- If you have an ip address, you are connected to the internet (ping to 8.8.8.8).
- If you can ping to 8.8.8.8, try ping to google.com
- If step 2 worked but step 3 didn`t, you need to fix your dns. Make sure that in the file /etc/resolv.conf there's a valid dns server.
I'm using umbrella DNS servers:
cat /etc/resolv.conf
nameserver 208.67.220.220
nameserver 208.67.222.222
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 29 '18 at 14:06
Jean Novak
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 29 '18 at 14:06
Jean Novak
461
answered Dec 29 '18 at 14:06
Jean Novak
461
461
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Jean Novak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
add a comment |
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
Some folks with this problem are on school or corporate networks that require the use of network login or apt proxies.
– user535733
Dec 29 '18 at 14:12
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
ok thanks I do believe I must be connected to the internet seeing that I was able to complete a partial update as I have described in what I appended to this post, I will check my dns as you have mentioned to see if this maybe to the new problem I am encountering
– Adam
Dec 29 '18 at 14:51
add a comment |
Adam is a new contributor. Be nice, and check out our Code of Conduct.
Adam is a new contributor. Be nice, and check out our Code of Conduct.
Adam is a new contributor. Be nice, and check out our Code of Conduct.
Adam is a new contributor. Be nice, and check out our Code of Conduct.
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2
In general, one should show the error messages (properly formatted, in a Edit ( askubuntu.com/posts/1105366/edit ) to your post, so that more knowledgable users can try to diagnose the problem. So far, your complaint looks like a networking or routing problem, but without the actual messages, no one can tell.
– waltinator
Dec 29 '18 at 14:00
ok thanks very much I will reformat things appropriately and edit the post accordingly
– Adam
Dec 29 '18 at 14:02