startb

startb is a command-line utility found on some Unix-like operating systems, particularly those derived from System V. Its primary function is to initiate or restart the system's boot process. Unlike a simple reboot command that might just reload the operating system, startb is often associated with a more fundamental level of system initialization, potentially involving firmware or low-level hardware checks before the main operating system kernel is loaded.

The exact behavior and availability of startb can vary significantly between different Unix variants and hardware architectures. In some systems, it might be used during the initial power-on sequence or to recover from certain critical system errors that prevent normal startup. It is generally considered a low-level command and is not intended for routine use by end-users. Administrators might employ startb in specific troubleshooting scenarios or during system maintenance when a full hardware re-initialization is deemed necessary. Its usage typically requires superuser privileges due to the sensitive nature of system startup operations.