sync.8: Page deleted

This page documents the sync command, which is provided by
coreutils. As such, the presence of this page in man-pages
makes no sense. And, anyway, the coreutils project has its
own sync(1) man page and "info" documentation. Furthermore,
the  man-pages sync(8) has crufty out-of-date and to some
extent irrelevant information.  So, now it's gone.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man8/sync.8

@@ -1,93 +0,0 @@
-.\" Reboot/halt and Linux information extracted from Rick Faith's original
-.\" sync(8) manpage, dating back to the Linux 0.99 days.  The Linux-specific
-.\" information is attributed to Linus Torvalds
-.\" Copyright 1992, 1993 Rickard E. Faith (faith@cs.unc.edu)
-.\"
-.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
-.\" May be distributed under the GNU General Public License
-.\" %%%LICENSE_END
-.\"
-.TH SYNC 8 1998-11-01 "GNU" "Linux Programmer's Manual"
-.SH NAME
-sync \- synchronize data on disk with memory
-.SH SYNOPSIS
-.B "sync [\-\-help] [\-\-version]"
-.SH DESCRIPTION
-.B sync
-writes any data buffered in memory out to disk.
-This can include (but is not limited to) modified superblocks,
-modified inodes, and delayed reads and writes.
-This must be implemented by the kernel;
-The
-.B sync
-program does nothing but exercise the
-.BR sync (2)
-system call.
-.PP
-The kernel keeps data in memory to avoid doing (relatively slow) disk
-reads and writes.
-This improves performance, but if the computer
-crashes, data may be lost or the filesystem corrupted as a result.
-.B sync
-ensures that everything in memory is written to disk.
-.PP
-.B sync
-should be called before the processor is halted in an unusual manner
-(e.g., before causing a kernel panic when debugging new kernel code).
-In general, the processor should be halted using the
-.BR shutdown (8)
-or
-.BR reboot (8)
-or
-.BR halt (8)
-commands, which will attempt to put the system in a quiescent state
-before calling
-.BR sync (2).
-(Various implementations of these commands exist; consult your
-documentation; on some systems one should not call
-.BR reboot (8)
-and
-.BR halt (8)
-directly.)
-.SH OPTIONS
-.TP
-.B "\-\-help"
-Print a usage message on standard output and exit successfully.
-.TP
-.B "\-\-version"
-Print version information on standard output, then exit successfully.
-.TP
-.B "\-\-"
-Terminate option list.
-.SH ENVIRONMENT
-The variables
-.BR LANG ,
-.BR LC_ALL ,
-.BR LC_CTYPE ,
-and
-.B LC_MESSAGES
-have the usual meaning.
-.SH CONFORMING TO
-POSIX.2.
-.SH NOTES
-On Linux,
-.B sync
-is guaranteed only to schedule the dirty blocks for writing; it can
-actually take a short time before all the blocks are finally written.
-The
-.BR reboot (8)
-and
-.BR halt (8)
-commands take this into account by sleeping for a few seconds after
-calling
-.BR sync (2).
-.PP
-This page describes
-.B sync
-as found in the file\%utils-4.0 package;
-other versions may differ slightly.
-.SH SEE ALSO
-.BR sync (2),
-.BR halt (8),
-.BR reboot (8),
-.BR update (8)