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 "icheck, df," etc.  It is mandatory before a boot. 

SEE ALSO

sync (VIII), update (VIII)

DIAGNOSTICS

−