Linux Process Management

1. Process: Running Program

2. Role of Process Management: (1) Determine the health status of the server (2) View all processes in the system (3) Kill process

3. View all the process Linux commands

(1) PS aux (2) Ps-le

Option: A: Displays all processes of a terminal, except session leader

U: Show the user and memory usage of the process

x: Show process without control terminal

-L: Long format display for more detailed information

-e: Show All Processes

Output of the 4.ps command

(1) User: Who generated the process

(2) PID: ID number of the process

(3)%CPU: The process consumes a percentage of CPU resources, the higher the consumption, the more resources the process consumes

(4)%MEM: The process consumes the percentage of physical memory, the higher the consumption, the more resources the process consumes

(5) VSZ: The size of the virtual memory that the process occupies, in kilobytes

(6) RSS: The process consumes the actual physical memory size, in kilobytes

(7) TTY: Which terminal the process is running on

(8) STAT: Process status,

(9) Start: The start time of the process

(10) Time: The process takes up the CPU's operating hours

(11) Command: Produces the name of this process

5.pstree Viewing the process tree

Option:-P: Show PID of the process

-U: Shows the user who owns the process

Linux Process Management