man page for
NAME Wget - The non-interactive network downloader. DESCRIPTION Wget is non-interactive, meaning that it can work in the background, while the user is not logged on. This allows you to start a retrieval and disconnect from the system, letting Wget finish the work. By contrast, most of the Web browsers require constant user's presence, which can be a great hindrance when transferring a lot of data.
wget is an example of non-interactive program I know. Now my question is,
- How can
wgetbe used without user logged on?
- How does non-interactive programs work?