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SYNC(II)                     8/5/73                      SYNC(II)







NAME

     sync - update super-block



SYNOPSIS

     (sync = 36.; not in assembler)

     sys  sync



DESCRIPTION

     Sync causes all information in core memory that should be on

     disk  to  be  written  out.   This  includes  modified super

     blocks, modified i-nodes, and delayed block I/O.



     It should be used by programs which examine a  file  system,

     for example check, df, etc.  It is mandatory before a boot.



SEE ALSO

     sync (VIII), update (VIII)



DIAGNOSTICS

     -