При обновлении до ubuntu 14.04 Я лично редактировал список источников и испортил его. Требуется предложение по устранению и обновлению! [дубликат]

Я новичок в ubuntu, при обновлении с ubuntu 13.10 до 14.04 я получал некоторые ошибки в списке источников. Пытаясь исправить это, я использовал исходный список другого компьютера и заменил его своим, теперь мой исходный список ubuntu, кажется, полностью поврежден, и я застрял в процессе обновления.

Срочно нужна помощь

Это мой текущий список источников.

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to

# newer versions of the distribution.

## Major bug fix updates produced after the final release of the
## distribution.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.


## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.


## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu saucy main
deb-src http://extras.ubuntu.com/ubuntu saucy main
# deb-src http://archive.canonical.com/ $(lsb_release -sc)partner
deb http://in.archive.ubuntu.com/ubuntu/ saucy main universe restricted multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ saucy main universe restricted multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu/ saucy-security universe restricted multiverse main
deb http://in.archive.ubuntu.com/ubuntu/ saucy-updates universe restricted multiverse main
deb http://in.archive.ubuntu.com/ubuntu/ saucy-proposed universe restricted multiverse main
deb http://in.archive.ubuntu.com/ubuntu/ saucy-backports universe restricted multiverse main
deb http://archive.canonical.com/ trusty partner
deb-src http://archive.canonical.com/ trusty partner
deb http://archive.ubuntu.com/ubuntu trusty multiverse main universe restricted
deb-src http://archive.ubuntu.com/ubuntu trusty main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty universe
deb http://archive.ubuntu.com/ubuntu trusty-backports universe main restricted multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu trusty-security multiverse main universe restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-security main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-security universe
deb http://archive.ubuntu.com/ubuntu trusty-updates multiverse main universe restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-updates universe
deb http://extras.ubuntu.com/ubuntu trusty main
deb-src http://extras.ubuntu.com/ubuntu trusty main
deb-src http://archive.canonical.com/ trusty partner
deb-src http://archive.ubuntu.com/ubuntu trusty main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty universe
deb-src http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-security main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-security universe
deb-src http://archive.ubuntu.com/ubuntu trusty-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-updates universe
deb-src http://extras.ubuntu.com/ubuntu trusty main