qemu-system software package provides QEMU full system emulation binaries, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install qemu-system
qemu-system is installed in your system.
Make ensure the qemu-system package were installed using the commands given below,
$ sudo dpkg-query -l | grep qemu-system *
You will get with qemu-system package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Miscellaneous |
| Package | qemu-system |
| Version | 2.0.0+dfsg-2ubuntu1.30 [amd64, |
| Description | QEMU full system emulation binaries |
| Sub Section | misc |