sync(2)                                                   sync(2)



NAME
     sync - update superblock

SYNOPSIS
     void sync()

DESCRIPTION
     The sync system call causes all information in memory that
     should be on disk to be written out.  This includes modified
     superblocks, modified inodes, and delayed block I/O.

     It should be used by programs which examine a file system,
     for example fsck, df, and so on.  It is mandatory before a
     reboot or a system shutdown.

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

SEE ALSO
     fsync(2)

     sync(1) in A/UX Command Reference

































January 1992                                                    1