Command shells such as those available in Linux, Unix, Windows, or the familiar DOS
prompt provide the ability to execute programs and other commands, usually with
character output. A secure command-shell or remote logon allows you to edit files, view
the contents of directories and access custom database applications. Systems and network
administrators can remotely start batch jobs, start, view or stop services and processes,
create user accounts, change permissions to files and directories and more. Anything that
can be accomplished at a machine’s command prompt can now be done securely from the
road or home