Glenda Schroeder

Glenda Schroeder is an American software engineer who implemented the first command line user interface shell. This creation for the Multics operating system at MIT was the predecessor to the Unix shell implemented at Bell Labs and still in use today. She also described the first e-mail implementation in 1964-65 (with Pat Crisman and Louis Pouzin) for a system of notifying users about backups of files .