Sometimes you’re trying to help somebody fix a problem you’ll have to tell them how to install software. Yet for some Ubuntu newbies even this can be confusing. The solution is to create a “software install” hyper link within a web page (such as a forum posting), new email window or Pidgin message window. To do this, simply click the “create link” button on the web page or within the email (the precise name of this will vary depending on the software/website used) and then type apt:package-name in the URL field, replacing package name with the precise name of the package as listed in Synaptic.
And now it will be easy for John to install cheese, just by clicking the on the link.