Learning without thought is labor lost, thought without learning is perilous.
Under Linux, process state there are five: Run state, interruptible sleep state, uninterruptible sleep state, stop state and tracking state
Run the executable or state indicates that the process is being executed,
Interruptible sleep state that the process is blocked, and other conditions are met will be awakened, can be interrupted early wake-up signal.
Uninterruptible sleep state and can interrupt sleep state is the same, except that he will not be interrupted signal.
Stop state is the process pauses, similar to hang, can not be interrupted signal.
Track state represents a break point tracking process.
Death states that the process has ended and recovery.