nsis software package provides Nullsoft Scriptable Install System (modified for Debian), 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 nsis
nsis is installed in your system.
Make ensure the nsis package were installed using the commands given below,
$ sudo dpkg-query -l | grep nsis *
You will get with nsis package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | nsis |
| Version | 2.46-7 |
| Description | Nullsoft Scriptable Install System (modified for Debian) |
| Sub Section | devel |