$ sudo apt-get update
$ sudo apt-get install erlang-syntax-tools 

erlang-syntax-tools is installed in your system.

Make ensure the erlang-syntax-tools package were installed using the commands given below,

$ sudo dpkg-query -l | grep erlang-syntax-tools *

You will get with erlang-syntax-tools package name, version, architecture and description in a table

erlang-syntax-tools package basic information: