Final answer:
To move a running process to the background in a terminal, press Ctrl + Z to stop it and then use the 'bg' command. For a new command, append '&' to have it run in the background immediately.
Step-by-step explanation:
To move a process that is currently running in your terminal into the background, you can use the bg command if the process is stopped or the & symbol to start a process directly in the background. If a process is currently running in the foreground, you can stop it temporarily by pressing Ctrl + Z. This will suspend the process and return control to the shell. Afterwards, you can move the process to the background by typing bg followed by the job number if there are multiple jobs, which sends the stopped process to the background where it will continue running.
If you started a process and you immediately want it to run in the background, you can append an & at the end of the command line. For example, python myscript.py & will start the Python script in the background.