SYNC(8)SYNC(8)NAMEsync - update the super block
SYNOPSIS
/bin/sync
DESCRIPTION
Sync executes the sync system primitive. Sync can be called to insure
that all disk writes have been completed before the processor is halted
in a way not suitably done by reboot(8) or halt(8). Generally, it is
preferable to use reboot or halt to shut down the system, as they may
perform additional actions such as resynchronizing the hardware clock
and flushing internal caches before performing a final sync.
See sync(2) for details on the system primitive.
SEE ALSOsync(2), fsync(2), halt(8), reboot(8), update(8)4th Berkeley Distribution May 28, 1986 SYNC(8)