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SYNC(1)                     General Commands Manual                    SYNC(1)



NAME
       sync - update the super block; force changed blocks to the disk

SYNOPSIS
       sync

DESCRIPTION
       sync  forces  any  information on its way to the disk to be written out
       immediately.  sync can be called to ensure that  all  disk  writes  are
       completed before the processor is halted abnormally.

SEE ALSO
       cron(8), fsck(8), halt(8), reboot(8)



                               9 September 1987                        SYNC(1)