NAME

sync − update super-block

SYNOPSIS

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. 

Sync should be used by programs that examine a file system, for example fsck, df, etc.  Sync 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 sync.

NEWS-OSRelease 3.3