composer software package provides dependency manager for PHP, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install composer
composer is installed in your system.
Make ensure the composer package were installed using the commands given below,
$ sudo dpkg-query -l | grep composer *
You will get with composer package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | PHP |
| Package | composer |
| Version | 1.1.3-1 |
| Description | dependency manager for PHP |
| Sub Section | php |