The GNU Hello program produces a familiar, friendly greeting. Yes, this is another implementation of the classic program that prints “Hello, world!” when you run it.
However, unlike the minimal version often seen, GNU Hello processes its argument list to modify its behavior, supports greetings in many languages, and so on. The primary purpose of GNU Hello is to demonstrate how to write other programs that do these things; it serves as a model for GNU coding standards and GNU maintainer practices.
GNU Hello is written in C. For implementations in other programming languages, notably including translation into other languages, please see the GNU Gettext distribution.
Hello can be found on the main GNU ftp server: http://ftp.gnu.org/gnu/hello/ (via HTTP) and ftp://ftp.gnu.org/gnu/hello/ (via FTP). It can also be found on the GNU mirrors; please use a mirror if possible.
Documentation for Hello is available online, as is documentation for most GNU software. You may also find more information about Hello by running info hello or man hello, or by looking at /usr/doc/hello/, /usr/local/doc/hello/, or similar directories on your system. A brief summary is available by running hello --help.
Hello has one mailing list: <email@example.com>. It is used to discuss all aspects of Hello, including development and enhancement requests, as well as bug reports.
Announcements about Hello and most other GNU software are made on <firstname.lastname@example.org>.
To subscribe to these or any GNU mailing lists, please send an empty mail with a Subject: header of just subscribe to the relevant -request list. For example, to subscribe yourself to the GNU announcement list, you would send mail to <email@example.com>. Or you can use the mailing list web interface.
Development of Hello, and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above).
Hello is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
The Free Software Foundation is the principal organizational sponsor of the GNU Operating System. Support GNU and the FSF by buying manuals and gear, joining the FSF as an associate member, or making a donation, either directly to the FSF or via Flattr.