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SAMS Teach Yourself Unix in 10 Minutes by Robert Shimonski

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fsck

The fsck command (short for “file system check” or “file system consistency check”) will start the Unix system utility to check the consistency of your file system. Every now and again you might hear a Unix system administrator talking about the need to fsck a hard drive because it is experiencing problems. Hard disks are like light bulbs: They are made to fail and actually have a MTBF (Mean Time Between Failure) associated with them. This just means that like a light bulb, their internal parts will eventually quit and cease to function due to nonstop use and/or damage.

The fsck command is Unix's disk fixer program, and it is used to clean up problems caused by crashes or errant pieces of software. Much like the tools used in Microsoft Windows ...

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