I can't remove duplicate repositories ubuntu 14.04

wget https://dl.dropbox.com/u/8850924/fixpackage
chmod +x ./fixpackage
sudo ./fixpackage

Should do it.

Thank you for the reply but I copy pasted the above in terminal and ran it , then i did the update I still got
W: Duplicate sources.list entry http://in.archive.ubuntu.com/ubuntu/ trusty-backports/multiverse i386 Packages (/var/lib/apt/lists/in.archive.ubuntu.com_ubuntu_dists_trusty-backports_multiverse_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems

What is the output of :

grep multiverse /etc/apt/sources.list

Thanks

What is the output of the terminal command

find /etc/apt -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;

Hi my apologies for the delay
for grep multiverse/etc/apt/sources.list
I got the following output
## multiverse WILL NOT receive any review or updates from the Ubuntu
deb http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
deb http://security.ubuntu.com/ubuntu trusty-security multiverse
deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse
deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports restricted main multiverse universe
deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse

for : find /etc/apt -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;
I got the following output:

/etc/apt/sources.list

     1 # deb cdrom:[Ubuntu 14.04.1 LTS _Trusty Tahr_ - Release amd64 (20140722.2)]/ trusty main restricted
     2 # deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)]/ trusty main restricted
     3
     4 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
     5 # newer versions of the distribution.
     6 deb http://in.archive.ubuntu.com/ubuntu/ trusty main restricted
     7 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty main restricted
     8 ## Major bug fix updates produced after the final release of the
     9 ## distribution.
    10 deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
    11 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates main restricted
    12 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    13 ## team. Also, please note that software in universe WILL NOT receive any
    14 ## review or updates from the Ubuntu security team.
    15 deb http://in.archive.ubuntu.com/ubuntu/ trusty universe
    16 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty universe
    17 deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates universe
    18 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates universe
    19 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    20 ## team, and may not be under a free licence. Please satisfy yourself as to
    21 ## your rights to use the software. Also, please note that software in
    22 ## multiverse WILL NOT receive any review or updates from the Ubuntu
    23 ## security team.
    24 deb http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
    25 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty multiverse
    26 deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
    27 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-updates multiverse
    28 ## N.B. software from this repository may not have been tested as
    29 ## extensively as that contained in the main release, although it includes
    30 ## newer versions of some applications which may provide useful features.
    31 ## Also, please note that software in backports WILL NOT receive any review
    32 ## or updates from the Ubuntu security team.
    33 deb http://security.ubuntu.com/ubuntu trusty-security main restricted
    34 deb-src http://security.ubuntu.com/ubuntu trusty-security main restricted
    35 deb http://security.ubuntu.com/ubuntu trusty-security universe
    36 deb-src http://security.ubuntu.com/ubuntu trusty-security universe
    37 deb http://security.ubuntu.com/ubuntu trusty-security multiverse
    38 deb-src http://security.ubuntu.com/ubuntu trusty-security multiverse
    39 ## Uncomment the following two lines to add software from Canonical's
    40 ## 'partner' repository.
    41 ## This software is not part of Ubuntu, but is offered by Canonical and the
    42 ## respective vendors as a service to Ubuntu users.
    43 ## This software is not part of Ubuntu, but is offered by third-party
    44 ## developers who want to ship their latest software.
    45 deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports restricted main multiverse universe
    46 deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
    47 deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse

/etc/apt/sources.list.d/webupd8team-y-ppa-manager-trusty.list

Thanks Manfred Hampl, that solved my question.

Thanks to @actionparnsip