SYNC(2)             UNIX Programmer's Manual		  SYNC(2)



NAME
     sync - update super-block

SYNOPSIS
     sync()

DESCRIPTION
     _S_y_n_c 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.

     _S_y_n_c should be used by programs that examine a file system,
     for example _f_s_c_k, _d_f, etc.  _S_y_n_c is mandatory before a boot.

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

BUGS
     The writing, although scheduled, is not necessarily complete
     upon return from _s_y_n_c.



































Printed 11/26/99	  June 30, 1985                         1