What is the command to view processes in Linux?

To detect and control a process, you must first understand the situation of the current process, that is, you need to check the running status of the current process. In Linux systems, we can use the ps command to view the process.

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ps command introduction

ps(process status) command is the most commonly used process viewing tool under Linux. Use this The command can determine which processes are running and their running status, whether the process has ended, whether there are zombies in the process, which processes are taking up too many resources, and so on.

Note: The ps command tool displays the instantaneous status of the process, not dynamic and continuous display. If you want to monitor the process status in real time, you should use the top command.

ps command options:

-a, view all

-u, display in user format

-x, display background processes Run parameters

-ef to display all information of the process in full format, including parent process Pid, ​​creator, creation time, and process number. Wait

In general projects, we first need to query a process and delete it using the command

ps -a | grep helloworld or

ps -ef |grep helloworld or other

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