Hello world, Debian style

# apt-get install hello

# hello
Hello, world!

# hello --help
Usage: hello [OPTION]...
Print a friendly, customisable greeting.

  -h, --help display this help and exit
  -v, --version display version information and exit

  -t, --traditional       use traditional greeting format
  -n, --next-generation   use next-generation greeting format
  -g, --greeting=TEXT     use TEXT as the greeting message