apt-update dosn't work after change sources.list

[Mary Qays]

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

Please help me.

Thanks in advance!

I have this error:

Code: Select all

Err http://security.debian.org jessie/updates InRelease
  
Err http://security.debian.org jessie/updates Release.gpg
  Could not resolve 'security.debian.org'
Err http://ftp.tr.debian.org jessie InRelease
  
Err http://ftp.tr.debian.org jessie-proposed-updates InRelease
  
Err http://ftp.tr.debian.org jessie Release.gpg
  Could not resolve 'ftp.tr.debian.org'
Err http://ftp.tr.debian.org jessie-proposed-updates Release.gpg
  Could not resolve 'ftp.tr.debian.org'
Reading package lists... Done
W: Failed to fetch http://ftp.tr.debian.org/debian/dists/jessie/InRelease  

W: Failed to fetch http://security.debian.org/dists/jessie/updates/InRelease  

W: Failed to fetch http://ftp.tr.debian.org/debian/dists/jessie-proposed-updates/InRelease  

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

W: Failed to fetch http://ftp.tr.debian.org/debian/dists/jessie/Release.gpg  Could not resolve 'ftp.tr.debian.org'

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

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

And my sources.list:
###### Debian Main Repos
deb http://ftp.tr.debian.org/debian/ jessie main contrib
deb-src http://ftp.tr.debian.org/debian/ jessie main contrib

###### Debian Update Repos
deb http://security.debian.org/ jessie/updates main contrib
deb http://ftp.tr.debian.org/debian/ jessie-proposed-updates main contrib
deb-src http://security.debian.org/ jessie/updates main contrib
deb-src http://ftp.tr.debian.org/debian/ jessie-proposed-updates main contrib

[grumpy_geek]

Could not resolve 'security.debian.org'
Could not resolve 'ftp.tr.debian.org'

Are you able to manually connect to those repositories, i.e. by means of a browser ...?

> http://security.debian.org/ | http://ftp.tr.debian.org/debian/ <

If not: what nameservers are you using, i.e. what's the contents of /etc/resolv.conf ...?