$ sudo apt-get update
$ sudo apt-get install clang-modernize-3.4 

clang-modernize-3.4 is installed in your system.

Make ensure the clang-modernize-3.4 package were installed using the commands given below,

$ sudo dpkg-query -l | grep clang-modernize-3.4 *

You will get with clang-modernize-3.4 package name, version, architecture and description in a table

clang-modernize-3.4 package basic information: