How to install teamviewer 9 on ubuntu 14.04

Below are the steps:

1. Download the installer (please download the 32 bit / 64 bit multiarch version):
   

   $ wget http://www.teamviewer.com/download/teamviewer_linux.deb

2. Add i386 architecture, if you are on 64 bit ubuntu:

   $ sudo dpkg --add-architecture i386; sudo apt-get update

3. Install teamviewer, but it will failed, because of unmet dependencies:
$ sudo dpkg -i teamviewer_linux.deb
Reading package lists... Done
... The following packages have unmet dependencies:
 libc6 : Breaks: libc6:i386 (!= 2.19-0ubuntu6) but 2.19-0ubuntu6.3 is to be installed
 libc6:i386 : Breaks: libc6 (!= 2.19-0ubuntu6.3) but 2.19-0ubuntu6 is to be installed
 libc6-dbg : Depends: libc6 (= 2.19-0ubuntu6.3) but 2.19-0ubuntu6 is to be installed
 libc6-dev : Depends: libc6 (= 2.19-0ubuntu6.3) but 2.19-0ubuntu6 is to be installed
 teamviewer9:i386 : Depends: libasound2:i386 but it is not going to be installed
                    Depends: libfreetype6:i386 but it is not going to be installed
                    Depends: zlib1g:i386 but it is not going to be installed
                    Depends: libsm6:i386 but it is not going to be installed
                    Depends: libxdamage1:i386 but it is not going to be installed
                    Depends: libxext6:i386 but it is not going to be installed
                    Depends: libxfixes3:i386 but it is not going to be installed
                    Depends: libxrandr2:i386 but it is not going to be installed
                    Depends: libxrender1:i386 but it is not going to be installed
                    Depends: libxtst6:i386 but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
   
4. Run "apt-get install -f" to fix the dependencies:

   $ sudo apt-get install -f
   Reading package lists... Done
   Building dependency tree      
   Reading state information... Done
   Correcting dependencies... Done
   The following extra packages will be installed:
     libasound2:i386 libc6 libfreetype6:i386 libice6:i386 libpng12-0:i386
     libsm6:i386 libuuid1 libuuid1:i386 libx11-6:i386 libxau6:i386 libxcb1:i386
     libxdamage1:i386 libxdmcp6:i386 libxext6:i386 libxfixes3:i386
     libxrandr2:i386 libxrender1:i386 libxtst6:i386 zlib1g:i386
   ... 

   Setting up libc6-dbg:amd64 (2.19-0ubuntu6.3) ... 

   Processing triggers for libc-bin (2.19-0ubuntu6) ...

5. Install teamviewer:

   $ sudo dpkg -i teamviewer_linux.deb 
   (Reading database ... 170140 files and directories currently installed.)
   Preparing to unpack teamviewer_linux.deb ...
   Unpacking teamviewer9 (9.0.32150) over (9.0.32150) ...
   Setting up teamviewer9 (9.0.32150) ...

6. Done, now you can find teamviewer in your list of application

Adding local directory to apt sources.list

I faced this problem when trying to install the latest version of lyx, frontend for the famous LaTeX/TeX document processor. Lyx is available at the ubuntu main repo, but the version is kind of outdated. After checking at http://www.getdeb.net, a latest version is available. After downloading the lyx and lyx-common package from here, I tried to install both of them using "dpkg -i *.deb" but they have unsatisfied dependencies. One of the way to solve this is to download all the dependencies and put them inside one directory, and run "dpkg -i *.deb" but I think I wanna try another solution which is using apt to install them. This is where "Adding local directory to apt sources.list" comes into the picture. The steps will be explained below:

1. Create the directory to put all the deb files you downloaded, in this case I'll create /home/foo/debs
$ mkdir /home/foo/debs

2. Put all the downloaded deb files into the directory
$ mv /home/foo/Desktop/*.deb /home/foo/debs

3. Check the current priorities and section for the package, find entry named Section and Priority:
$ dpkg --info lyx_1.6.2-1~getdeb1_i386.deb

Here are some of the info:
Package: lyx
Section: editors
Priority: optional
Homepage: http://www.lyx.org/

4. Create override file. Override file is used to override the default priority and section setting of the package (refer to no. 3 for guide on how to check section and priority). Override file contains 3 columns: package, priority, section. Package is the name of the package, priority is low, medium, high or optional and section is the section to which it belongs.
Example of override file content:

## Override
#Package priority section
lyx low editors

5. Create Packages.gz inside /home/foo/debs
$ cd /home/foo/debs
$ sudo dpkg-scanpackages . override | gzip -c9 > Packages.gz

6. If you are too lazy to do the override file, you do not have to. Just change the "dpkg --scanpackages" command above to this:
$ cd /home/foo/debs
$ sudo dpkg-scanpackages . /dev/null | gzip -c9 > Packages.gz
If you follow this path, ignore step 4 and 5

7. Add this line to /etc/apt/sources.list
deb file:///home/foo/debs /

8. Resynchronize the package index files from their sources
$ sudo apt-get update

9. Install your application (in this case, lyx)
$ sudo apt-get install lyx


Apt will fetch the deb files from your local file directory also. Congratulations, you just created a local file repository in your own computer :)