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SAMS Teach Yourself Unix in 10 Minutes by Robert Shimonski

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shutdown/reboot

There may be a time where you need to shut down your Unix system or reboot it. Although I can vouch from many years of experience that you will reboot Unix or Linux far less than Microsoft Windows, you may still need to shut down your system or reboot it. Unix boots differently than Microsoft Windows. Most Windows operating systems will boot up as a complete unit. In Unix, the kernel loads, and then anything else is loaded around it for use. Unix uses dozens of programs to form what appears to be a huge operating system, when in reality it's all loaded separately as single programs.

Each of these programs might be in the process of modifying, moving, creating, or deleting files at any point in time and cannot be interrupted. If ...

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