On 18 oct, 16:50, "Phlip" <phlip2... / gmail.com> wrote: > Kless wrote: > > system("sudo mkdir -p #{dir_root}") > > First, puts a string that advises the user why they might need to enter > their password. > > But shouldn't you be using a high-level installer for Java itself? No. I've to install anything JAR files in that directory.