1SYNC(2)                       System Calls Manual                      SYNC(2)
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NAME

6       sync - update super-block
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SYNOPSIS

9       sync()
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DESCRIPTION

12       Sync causes all information in core memory that should be on disk to be
13       written out.  This includes modified super  blocks,  modified  i-nodes,
14       and delayed block I/O.
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16       Sync should be used by programs that examine a file system, for example
17       fsck, df, etc.  Sync is mandatory before a boot.
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SEE ALSO

20       fsync(2), sync(8), update(8)
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BUGS

23       The writing, although  scheduled,  is  not  necessarily  complete  upon
24       return from sync.
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284th Berkeley Distribution        June 30, 1985                         SYNC(2)
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