# 2.11BSD#431 - /usr/man/cat8/sync.0

    SYNC(8)             UNIX Programmer's Manual		  SYNC(8)

    NAME
         sync - update the super block

    SYNOPSIS
         sync

    DESCRIPTION
         Sync executes the sync system primitive.  Sync can be called
         to insure that all disk writes have been completed before
         the processor is halted in a way not suitably done by
         reboot(8) or halt(8).  Generally, it is preferable to use
         reboot or halt to shut down the system, as they may perform
         additional actions such as resynchronizing the hardware
         clock and flushing internal caches before performing a final
         sync.

         See sync(2) for details on the system primitive.

    SEE ALSO
         sync(2), fsync(2), halt(8), reboot(8), update(8)

    Printed 11/26/99	November 27, 1996			1

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