lxc software package provides Linux Containers userspace tools, 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 lxc
lxc is installed in your system.
Make ensure the lxc package were installed using the commands given below,
$ sudo dpkg-query -l | grep lxc *
You will get with lxc package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | lxc |
| Version | 1.0.8-0ubuntu0.4 [amd64, i386] |
| Description | Linux Containers userspace tools |
| Sub Section | Admin |