1SYNC(8) System Manager's Manual SYNC(8)
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6 sync - update the super block
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9 sync
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12 Sync executes the sync system primitive. Sync can be called to insure
13 that all disk writes have been completed before the processor is halted
14 in a way not suitably done by reboot(8) or halt(8). Generally, it is
15 preferable to use reboot or halt to shut down the system, as they may
16 perform additional actions such as resynchronizing the hardware clock
17 and flushing internal caches before performing a final sync.
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19 See sync(2) for details on the system primitive.
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22 sync(2), fsync(2), halt(8), reboot(8), update(8)
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264th Berkeley Distribution November 27, 1996 SYNC(8)