Functions and examples of ps command in Linux!

In the Linux system, there are various processes running. If we want to monitor the process, we must understand the situation of the current process, that is, view the current process. In Linux, there are many commands that can be used to view processes, and the ps command is one of them. Next, we will introduce the functions and examples of the ps command in Linux through this article!

The ps command is a powerful command that can provide detailed information about the processes running in the system, such as process ID, CPU utilization and memory consumption.

　1. Basic usage of ps command

The basic syntax of the ps command is as follows:

ps [options]

ps command is a simple command, its default behavior is to display all processes of the current user. The output of the ps command can be customized by adding different options. Below are some commonly used ps command options and their functions.

　2. Common options of ps command

　-e: List all processes in the system.

　-f: Display complete process information.

　-l: Display process information in long format.

　-h: Do not display the title line.

　-u: Display the user name and other detailed information of the process owner.

　3. ps command example

　①List all processes in the system

　ps -e

This command will list all processes in the system, including processes of other users.

　②Display complete process information

　ps -f

This command will display complete process information, including process ID, parent process ID, CPU usage, memory usage and other detailed information.

　③Display process information in long format

　ps -l

This command will display process information in long format, including process details and status.

　④Display the process information of the specified user

　ps -u username

This command will display all process information of the specified user. You can view the user's processes by replacing username with a specific user name.

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