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If the Linux system is not properly shutdown the file system can be corrupted. How corrupted depends upon what programs were being run, and whether the hard drives were synced before shutdown. Many time accidental shutdowns can be recovered, but sometimes not. It is better to know the proper methods than to risk file corruption. The shutdown command is the best method to insure programs are closed, files are saved and hard drives are properly synced. To shutdown and reboot, perhaps to start another OS, (gasp)
# shutdown -r %time% # %time% can be now or a time in minutesMany Linux systems trap the <Ctrl><Alt><Del> key combination (aka ``Three Finger Salute'') and alias it to ``shutdown -r now'' To shutdown, before electrically turning off the system, you might # shutdown -h now # you can substitute a number and specify time in minutes