apt-get update could not resolve 'security.debian.org'

[sambale]

Hi everyone,

I am a beginner using debian linux on beaglebone board.
I am trying to update using this command
apt-get update
But I am getting the following error

Could anyone please help me this this? It's a bit urgent :-/

Thanks in advance!

Code: Select all

root@beaglebone:~# apt-get install ntp
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package ntp is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'ntp' has no installation candidate
root@beaglebone:~# apt-get update
Err http://security.debian.org wheezy/updates Release.gpg
  Could not resolve 'security.debian.org'
Err http://ftp.debian.org wheezy Release.gpg
  Could not resolve 'ftp.debian.org'
Err http://ftp.debian.org wheezy-updates Release.gpg
  Could not resolve 'ftp.debian.org'
Reading package lists... Done
W: Failed to fetch http://ftp.debian.org/debian/dists/wheezy/Release.gpg  Could not resolve 'ftp.debian.org'

W: Failed to fetch http://security.debian.org/dists/wheezy/updates/Release.gpg  Could not resolve 'security.debian.org'

W: Failed to fetch http://ftp.debian.org/debian/dists/wheezy-updates/Release.gpg  Could not resolve 'ftp.debian.org'

W: Some index files failed to download. They have been ignored, or old ones used instead.

[cra1g321]

post your /etc/apt/sources.list file in code brackets

[buzzin]

It's not security alone.
The output you posted shows that none of the names can be resolved.
Is DNS working on this machine at all?
does 'host www.google.com' give a correct answer?
and does ping 8.8.8.8 work?

If the first command I gave fails, but the second one works: DNS resolving isn't set up correctly. Please add 'nameserver 8.8.8.8' to the /etc/resolv.conf file and try again.
If both don't work: you don't have a proper internet connection, please figure out if you network is working at all...

[reinob]

It's not security alone.
The output you posted shows that none of the names can be resolved.
Is DNS working on this machine at all?
does 'host http://www.google.com' give a correct answer?
and does ping 8.8.8.8 work?

If the first command I gave fails, but the second one works: DNS resolving isn't set up correctly. Please add 'nameserver 8.8.8.8' to the /etc/resolv.conf file and try again.
If both don't work: you don't have a proper internet connection, please figure out if you network is working at all...

Correction: "host www.google.com". Drop the "http://" which has nothing to do with DNS.

Please kindly post the contents of /etc/resolv.conf. If it only says "127.0.0.1" please explain how you have configured the network (have you installed dnsmasq?, are you using DHCP?)

[buzzin]

Correction: "host http://www.google.com". Drop the "http://" which has nothing to do with DNS.

oops, that crept in, isn't the first time and probably won't be the last
(I know it's wrong, don't worry )