Google released a new tool to use the service from Google. Unlike usual, this tool uses command-line interface or better known as the CLI (Command Line Interface). Named GoogleCL.
If you don't understand what it is about the CLI, just imagine DOS in Windows OS. That is one example of the CLI. A 'weird' feature according to me personally, where now all use the GUI but Google returned to the CLI. But clearly I believe Google has the exact reason for making this tool.
When this article was written, GoogleCL can be used to google service:
$ google blogger post --title "foo" "command line posting"
$ google calendar add "Lunch with Jim at noon tomorrow"
$ google contacts list name,email > contacts.csv
$ google docs edit --title "Shopping list"
$ google picasa create --album "Cat Photos" ~/photos/cats/*.jpg