Shulou(Shulou.com)06/02 Report--

How to view and control processes in Linux

A program is a static collection of executable machine code and data stored in an external storage medium (such as a hard disk), while a process is a computer program that executes dynamically in CPU and memory. In Linux systems, one or more processes can be created after each program starts. For example, a httpd program that provides Web services may create multiple processes to provide services when a large number of users visit the Web page at the same time.

One: view and control the process

Use different command tools to view the status of the process from different angles.

1. View static process statistics-ps

​ ps aux ps-elf

A: displays all the process information under the current terminal

U: output process information in a user-based format

X: displays the process information of the current user under all terminals

-e: displays all process information in the system

-l: displays process information in a long format

-f: displays process information in a complete format

The meaning of the first row of list fields:

​ USER: the name of the user account that started the process

​ PID: the ID number of the process, which is unique on the current system

​ TTY: on which terminal the process runs. "?" The table is unknown or no terminal is required

​ STAT: shows the current state of the process, such as S (hibernating), R (running), Z (dead),

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.