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Examen 201 : Advanced Administration »
Section 5 »
Question 16/23
Answer: sync
Explanation: The sync command is used to flush the file system buffers and ensures that the changes that you
have made to a file are written to disk. When you shutdown the system, the system runs the sync command to
flush the buffers to disk, but the command can be manually entered at any time.
Reference: http://www.oreillynet.com/linux/cmd/s/sync.html