Linux Processes
A Linux process contains the resources that correspond to a unit of execution. Resources are things such as memory, file handles, and one thread of execution. A thread is the execution context represented by the hardware register contents and memory stack frames. Processes are related in a hierarchical tree. The init process is the parent of all processes. It is part of the UNIX System V init architecture. The init man page says that there should be a readme file in /etc/init.d that explains System V init, but our Red Hat system doesn't have a readme there.
Init creates processes from a script stored in/etc/inittab. A group of processes to be run is specified in a runlevel. The system is always set to a current runlevel. That ...
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