nohup

Unix Nohup: Run a Command or Shell-Script Even after You Logout
nohup command-with-options &
How do I put an already-running process under nohup?
1.  Ctrl + Z to stop (pause) the program and get back to the shell.
2.  bg to run it in the background.
3.  disown -h [job-spec] where [job-spec] is the job number (like %1 for the first running job; find about your number with the jobs command) so that the job isn't killed when the terminal closes.