.Dd January 30, 2015
.Dt SYNC 1
.Os
.Sh NAME
.Nm sync
.Nd flush disk cache
.Sh SYNOPSIS
.Nm
.Sh DESCRIPTION
invokes
.Xr sync 2
to flush all unwritten changes to the disk. This is
usually done before shutting down, rebooting or halting.
.Sh SEE ALSO
.Xr fsync 2 ,