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. 

It should be used by programs which examine a file system, for example icheck, df, fsck etc.  It is mandatory before bringing down the system. 

SEE ALSO

sync(8), update(8)

BUGS

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

7th Edition