libapparmor1 software package provides changehat AppArmor library, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libapparmor1
libapparmor1 is installed in your system.
Make ensure the libapparmor1 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libapparmor1 *
You will get with libapparmor1 package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Libraries |
| Package | libapparmor1 |
| Version | 2.7.102-0ubuntu3.10 [amd64, i3 |
| Description | changehat AppArmor library |
| Sub Section | libs |