How can Linux monitor whether a process is running?

In Linux, there are several methods available for monitoring whether a process is running or not.

1. Using the ps command: The ps command displays a list of processes currently running on the system. By using the grep command, you can filter out information of the target processes. For example, to monitor if a process named “process_name” is running, you can execute the following command:
2. List all running processes with the name “process_name”.
3. If the output includes information about the target process, it means that the process is running.
4. To utilize the pgrep command: pgrep command can be used to search for running processes based on their process name or process ID. For example, to monitor if a process named “process_name” is running, you can execute the following command:
5. find the process ID of the process named “process_name”
6. If the command is successfully executed and the process ID of the target process is outputted, it means that the process is running.
7. The command “pidof” can be used to find and output the process ID of a running process based on its name. For example, to monitor whether a process named “process_name” is running, you can execute the following command:
8. List the process ID of a process by name.
9. If the command executes successfully and outputs the process ID of the target process, it means that the process is running.
10. Utilize system monitoring tools: In Linux systems, there are specialized tools such as top, htop, and glances that are used to monitor system resources and process status. These tools can display real-time process information and offer additional monitoring and management capabilities.

Any of the above methods can be used to monitor whether a process is running, choose one method based on your monitoring needs.