ubuntu

 cat /etc/apt/sources.list
#####################OFFICIAL UBUNTU REPOS ###################
#############################################################

###### Ubuntu Main Repos
deb http://de.archive.ubuntu.com/ubuntu/ saucy main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ saucy main restricted universe multiverse

###### Ubuntu Update Repos
deb http://de.archive.ubuntu.com/ubuntu/ saucy-security main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu/ saucy-updates main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu/ saucy-proposed main restricted universe multiverse
deb http://de.archive.ubuntu.com/ubuntu/ saucy-backports main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ saucy-security main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ saucy-updates main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ saucy-proposed main restricted universe multiverse
deb-src http://de.archive.ubuntu.com/ubuntu/ saucy-backports main restricted universe multiverse

###### Ubuntu Partner Repo
deb http://archive.canonical.com/ubuntu saucy partner
deb-src http://archive.canonical.com/ubuntu saucy partner

###### Ubuntu Extras Repo
deb http://extras.ubuntu.com/ubuntu saucy main
deb-src http://extras.ubuntu.com/ubuntu saucy main

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ls -al /etc/apt/sources.list.d
total 8
drwxr-xr-x 2 root root 4096 Feb 16 13:37 .
drwxr-xr-x 6 root root 4096 Feb 16 13:36 ..


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lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Trusty Tahr (development branch)
Release:    14.04
Codename:   trusty


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 uname -a
Linux E330 3.12.0-7-generic #15-Ubuntu SMP Sun Dec 8 23:39:27 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux