Running a Program in the Background
In all the examples so far in this book, commands were run in the foreground. When you run a command in the foreground, the shell waits for it to finish before giving you another prompt and allowing you to continue. When you run a command in the background, you do not have to wait for the command to finish before you start running another command.
A job is a series of one or more commands connected by one or more pipes. You can have only one foreground job in a window or on a screen, but you can have many background jobs. By running more than one job at a time, you are using one of GNU/Linux's important features: multitasking. running a command in the background can be useful when the command will be running ...
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