linux view process

Linux methods to view processes include using the ps command, using the top command, using the htop command, using the pstree command, using the pgrep and pkill commands, etc. Detailed introduction: 1. Use the ps command, which is a common command used to view the current system process status; 2. Use the top command, which is a command line tool that dynamically displays the system process status; 3. Use the htop command, htop is an interactive process viewing tool, providing a more friendly and intuitive interface and more.

#In a Linux system, there are many ways to view running processes. The following are several common methods:

1. Use the ps command: The ps command is a common command used to view the status of the current system process. You can view all currently running processes through the following command:

   ps -ef

This command will display the detailed information of all processes, including process ID (PID), parent process ID (PPID), user, CPU usage, memory usage etc.

2. Use the top command: The top command is a command line tool that dynamically displays the status of system processes. You can view the real-time process status through the following command:

   top

This command will display the list of currently running processes and sort them by CPU usage. You can use the arrow keys and other options on your keyboard to view different process information such as memory usage, process status, etc.

3. Use htop command: htop is an interactive process viewing tool, providing a more friendly and intuitive interface. You can install and run htop through the following command:

   sudo apt-get install htop
   htop

This command will open the htop interface and display the list of currently running processes. Similar to top, htop also provides various options and shortcut keys to view different process information.

4. Use the pstree command: The pstree command displays the relationship between processes in a tree structure. You can view the process tree through the following command:

   pstree

This command will display the currently running processes and the parent-child relationship between them. Provides a clearer view of the hierarchy between processes.

5. Use pgrep and pkill commands: The pgrep command is used to find the process ID based on the process name or other conditions, while the pkill command is used to terminate the process based on the process name or process ID. You can use pgrep and pkill with the following command:

   pgrep 进程名
   pkill 进程名

For example, to find a process named "apache2", you can use the command:

   pgrep apache2

This command will display the information related to the "apache2" process process ID.

The above are several commonly used methods to view the processes running in the Linux system. Based on actual needs, choose a suitable method to view process information. Please note that when using these commands, root or sudo privileges may be required to obtain complete information.

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