For an interactive user, this is usually one of the system's command line interpreters (shells).
The VS operating system and all system software were built from the ground up to support interactive users as well as batch operations.
Mavshack for Facebook has already attracted interactive users by the hundreds of thousands.
Video Web conferencing technology can become complicated with add-ons that make conferencing more user friendly and interactive.
The problems of file management for multiple interactive users will be tackled.
The site is user interactive and it allows the user to answer the questions posted by others.
The shell can then suggest probable corrections to the interactive user.
A shell script can prompt the interactive user for a value.
A shell script can present the interactive user with a list of choices.
A shell script (or job) can report progress of long running tasks to the interactive user.