29. To append output to an existing file, you use 30. The UNIX file system (ufs) supports which automatically move data on damaged portions of disks to areas that are not damaged. a. hot fixes c. recovery fixes d. extents b. backups 31. In Linux, the native file system, is the-一, which is installed by default. а.ufs b. ext fs c. ReiserFS d. 32. A(m)is used to reduce file fragmentation, because a block of contiguous
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