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Solaris™ 8 System Administrator Exam Cram™ 2 (Exams CX-310-011 and CX-310-012) by Darrell L. Ambro

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System Run Levels

To give the system administrator a convenient way to shut down or reboot the system and to control system services and resources, eight system run levels (also referred to as init states) are defined and assigned specific functionality. Table 4.5 describes the eight run levels.

Table 4.5. The Eight System Run Levels
Run Levelinit StateFunctionality
0Power DownThe system is being shut down. All users are forced off the system. All operating system services are stopped in an orderly manner. When this process is complete, the system is at firmware mode. For SPARC platforms, firmware mode is the ok OpenBoot prompt. It is safe to turn off power to the system and peripherals.
s or SSingle UserThe system is prepared for maintenance. Any ...

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