aspell software package provides GNU Aspell spell-checker, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aspell
aspell is installed in your system.
Make ensure the aspell package were installed using the commands given below,
$ sudo dpkg-query -l | grep aspell *
You will get with aspell package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Text Processing |
| Package | aspell |
| Version | 0.60.7~20110707-3build1 |
| Description | GNU Aspell spell-checker |
| Sub Section | Text |