Record nine essays processes and scheduled tasks Task Management

1 relationship, procedures and processes

(1) Program

• In the hard disk, an optical disk medium such as executable code and data
• Static code saved

(2) process

• Program code running in CPU and memory
• Dynamic code execution
• Parent and the child: Every process can create one or more processes
• 2, static view process information
• [root@localhost ~]# ps aux 

  (2) stat state

  • S: uninterruptible sleep
  • R: can interrupt sleep
  • Z: Ready or running
  • <: Advanced finite process
  • N: low-priority process
  • +: The foreground process group of the process
  • T: suspend state
  • Z: dead state

(1) Program

• In the hard disk, an optical disk medium such as executable code and data
• Static code saved

(2) process

• Program code running in CPU and memory
• Dynamic code execution
• Parent and the child: Every process can create one or more processes
• 2, static view process information
• [root@localhost ~]# ps aux 

  (2) stat state

  • S: uninterruptible sleep
  • R: can interrupt sleep
  • Z: Ready or running
  • <: Advanced finite process
  • N: low-priority process
  • +: The foreground process group of the process
  • T: suspend state
  • Z: dead state