Really good tool for taking control of google products using command line “terminal”, supporting many products of google like Blogger, calender, contacts, Docs, picasa, and Youtube.
check the dependencies and system requirement before installation from Here
Download GoogleCL with .Deb file for ubuntu/Debian or the source code for other distributions from Here
After the installation you will need to authorized access for each product you want to use for Google.
when you try to get access to calender for example link will showup to open on your browser to authorize GoogleCL
after you open this link on your browser you will be able to add events on you calender. so will add event on calender with this name ” Test for GoogleCL on LinuxNOV ”
using this command line