atop software package provides Monitor for system resources and process activity, 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 atop
atop is installed in your system.
Make ensure the atop package were installed using the commands given below,
$ sudo dpkg-query -l | grep atop *
You will get with atop package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Administration Utilities |
| Package | atop |
| Version | 1.26-2 |
| Description | Monitor for system resources and process activity |
| Sub Section | Admin |