Using Gmail as a filesystem in Linux - GmailFS

GmailFS provides a mountable Linux filesystem which uses your Gmail account as its storage medium. GmailFS is a Python application and uses the FUSE userland filesystem infrastructure to help provide the filesystem, and libgmail to communicate with Gmail.

GmailFS supports most file operations such as read, write, open, close, stat, symlink, link, unlink, truncate and rename. This means that you can use all your favourite unix command line tools to operate on files stored on Gmail (e.g. cp, ls, mv, rm, ln, grep etc. etc.).

More info here