Run the command, but get the shell back. End the command with the "&"

Note that with the above, if you close the terminal, the session will close (unlike a screen session).  

If you want to run a command, have it keep running, and log out and have it still run, you need to nohup it. 

Any output will be stored in a file called nohup.out.

If you want to do the same as above, but don't want to save the output and send it to dev/null, then do the following: