#!/bin/bash

ps2pdf snakes_cours_preambule_gradient_4pages.ps snakes_cours_preambule_gradient_4pages.pdf
ps2pdf snakes_cours_4pages.ps snakes_cours_4pages.pdf

pdftk snakes_cours_preambule_gradient_4pages.pdf snakes_cours_4pages.pdf cat output snakes_cours_4_pages.pdf