BSD 4_3 release

[unix-history] / usr / man / man8 / sync.8

diff --git a/usr/man/man8/sync.8 b/usr/man/man8/sync.8
index 5620146..b8242f3 100644 (file)
--- a/usr/man/man8/sync.8
+++ b/usr/man/man8/sync.8
@@ -1,4 +1,10 @@
-.TH SYNC 8  "4 February 1983"
+.\" Copyright (c) 1980 Regents of the University of California.
+.\" All rights reserved.  The Berkeley software License Agreement
+.\" specifies the terms and conditions for redistribution.
+.\"
+.\"    @(#)sync.8      6.2 (Berkeley) 5/28/86
+.\"
+.TH SYNC 8 "May 28, 1986"

 .UC 4
 .SH NAME
 sync \- update the super block
 .UC 4
 .SH NAME
 sync \- update the super block


@@ -10,11 +16,20 @@ executes the
 .I sync
 system primitive.
 .I Sync
 .I sync
 system primitive.
 .I Sync

-can be called to insure all disk writes have been completed before the
+can be called to insure that all disk writes have been completed before the

 processor is halted in a way not suitably done by
 .IR reboot (8)
 or
 .IR halt (8).
 processor is halted in a way not suitably done by
 .IR reboot (8)
 or
 .IR halt (8).

+Generally, it is preferable to use
+.I reboot
+or
+.I 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
+.IR sync .

 .PP
 See
 .IR sync (2)
 .PP
 See
 .IR sync (2)