Definitions for "Run Level"
Keywords:  init, telinit, inittab, reboot, multi
a letter or digit that represents a system state in which a particular set of system services are available
a particular set of processes ranging from a bare minimum for system administration only to a full operation supporting all configured devices
a state of init and the whole system that defines what system services are operating
Keywords:  boot, point, process
a point in the boot process