apache2 software package provides Apache HTTP Server metapackage, 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 apache2
apache2 is installed in your system.
Make ensure the apache2 package were installed using the commands given below,
$ sudo dpkg-query -l | grep apache2 *
You will get with apache2 package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Web Software |
| Package | apache2 |
| Version | 2.2.22-1ubuntu1.11 [amd64, i38 |
| Description | Apache HTTP Server metapackage |
| Sub Section | Web |