Creating and managing processes in UNIX is done using the command line.
For example, to create a process, you can use the fork() system call. This will create a new process which is a copy of the current process. The new process is called a child process and the original process is called the parent process.
To manage processes, you can use the ps command to view information about running processes. For example, you can use the ps command to view the PID (Process ID), the command used to start the process, the user that owns the process, and the amount of CPU and memory the process is using.
You can also use the kill command to terminate processes. This command requires the PID of the process you want to terminate. For example, if you wanted to terminate a process with the PID 12345, you would use the command:
kill 12345