Foreground and Background Processes

To make a process to run in background, use & at the end of command.

Code:

$ sleep 10&

To bring this process to foreground, use 'fg'.

Code:

$ fg

To run a process in foreground, simply run the command.

Code:

$ sleep 10

To send this process to background, first stop this process using 'ctrl+z'. then use 'bg' command. stopped process ll continue in background.

Code:

$ bg