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♦ The Vixie cron system

♦ How to get the most out of your system

4.1. Quy trình từ trong ra ngoài

4.1.1. Đa người dùng và đa tác vụ

Now that we are more used to our environment and we are able to communicate a little bit with our system, it is time to study the processes we can start in more detail. Not every command starts a single process. Some commands initiate a series of processes, such as Mozilla; others, like ls, are executed as a single command.

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