OCA Oracle Solaris 11 System Administration Exam Guide (Exam 1Z0-821)

TWO-MINUTE DRILL

Understanding Processes

Every user process is created by a parent process that forks a copy of itself under a new PID assignment and then replaces the parent’s program code with the new program. This is sometimes called the fork-and-exec model of process creation and referred to as spawning.

You can distinguish a true user process from a so-called system process using the pfiles command. A system process doesn’t keep a list of open ...