$ uname -a
Linux guilmon 3.11.0-13-generic #20-Ubuntu SMP Wed Oct 23 07:38:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ man echo
[...]
       --help display this help and exit

       --version
              output version information and exit
[...]

$ echo --help
--help

$ echo --version
--version