screen and job control

A look at using shell job control, plus a quick overview of what I consider to be the best alternative to job control, GNU screen.

• run a task in the background
  
• bring a task to the foreground
  
• bash shell specific: fg
  
• list jobs running in the background
  
• suspend a currently running task
  
• allow a suspended task to run in the background
  
• run a task in the background, and allow yourself to logout
  bash shell specific: disown
  
• GNU screen