It’s a good development practice to insert at the beginning of a file copyright, license, and author information. Being lazy I automated the process of insertion using Emacs’ skeleton mode and auto insert mode.
Skeletons support Lisp expressions, so I embedded automatic year generation as well as retrieval of organization’s name, user’s full name, and user’s email address. (You may need to add ORGANIZATION and EMAIL environment variables to your .bash_profile)
M-x skeleton-name will call the skeleton interactively and insert it at the cursor’s position
Alternatively the header insertion automation can be accomplished with yasnippet package, which I use with different programming modes.