D33233.diff
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	diff --git a/bin/sync/sync.8 b/bin/sync/sync.8
	--- a/bin/sync/sync.8
	+++ b/bin/sync/sync.8
	@@ -26,7 +26,7 @@
	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	.\" SUCH DAMAGE.
	.\"
	-.Dd May 31, 1993
	+.Dd April 25, 2024
	.Dt SYNC 8
	.Os
	.Sh NAME
	@@ -69,3 +69,31 @@
	.Nm
	utility appeared in
	.At v4 .
	+.Pp
	+On systems older than
	+.Bx 4.0 ,
	+commands like
	+.Xr reboot 8
	+and
	+.Xr halt 8
	+were unavailable.
	+The shutdown procedure involved running
	+.Nm ,
	+waiting for the lights to stop,
	+and turning off the machine.
	+.Pp
	+Issuing three separate
	+.Nm
	+commands (one line each) was a placebo that would generally suffice in
	+.At v7
	+machines that were otherwise quiesced systems.
	+It replaced the one-per-line
	+.Nm
	+as a substitute for waiting.
	+.Pp
	+.Bx 4.0
	+introduced
	+.Xr reboot 2
	+and
	+.Xr sync 2
	+which rendered this trick obsolete.