What is a background process?
Normally, when you type a command, you don't get another prompt until
that command has finished. However, if you end your command line with
an ampersand (&), the command will start running ``in the
background,'' and you will get another prompt right way.
You can continue typing more commands while the background
process is running.
For example, to run a command called
hypnotize_brick in the background, you might type:
% hypnotize_brick&  12393 %The second line tells you that your background job number is , and its process ID is 12393. You may need these numbers later to control the job. The next few topics will tell you how to use these numbers.
Warning: running a job in the background won't work unless it requires no keyboard input. If the background process needs keyboard input, you will see a message like this:
 + Stopped (tty input) hypnotize_brickSee `Resuming a suspended process' for help in dealing with this situation.
John Shipman, email@example.com
Last updated: 1995/12/10 07:44:37 UT