sbin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line nroff pattern

Remove /^\.\\"\s*\$FreeBSD\$$\n/

shutdown.8: Add a note about needed priviledges to run the command

In order to use the shutdown command, the user must
have root privileges or be a member of the operator group.

PR: 266525
Reported by: Zsolt Udvari <uzsolt at uzsolt hu>
Reviewed by: pauamma
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36688

shutdown.8: Fix typo

Fix a typo in shutdown.8, use ',' instead of '.' when listing items.

MFC after: 1 week

Small tweak to the default behavior of shutdown -c

'shutdown -c' is supposed to power cycle the system rather than doing a normal
reboot. However, when that fails, it halts the system. This is not quite right
since the intent isn't to halt the system but to restart. Make the default init
behavior be to restart the system. The halt(8) interface can be used if you'd
like to powercycle or halt.

MFC After: 1 week
Differential Revision: https://reviews.freebsd.org/D23129

shutdown: Assume absolute time is in the future

The original bug describes it best:

When an absolute time is specified to shutdown, the program's
behavior depends on whether that time has passed during the
current calendar day. POLA would suggest that for shutdown,
whose time argument is always supposed to be in the future,
absolute times specified without a specific date should refer
to the next occurrence of that time, rather than erroring out
if that time has already passed during the current day.

PR: 32411
Submitted by: wollman@khavrinen.lcs.mit.edu
Submitted on: 2001-11-30 20:30:01 UTC
Reviewed by: asmodai (at time of bug submission)

Add power cycle support (-c) to shutdown.

Sponsored by: Netflix

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

shutdown appeared as a standalone utility in 4.1BSD.
http://mail-index.netbsd.org/source-changes-d/2016/09/13/msg008686.html
http://mail-index.netbsd.org/source-changes-d/2016/09/14/msg008691.html
PR: 212552
Approved by: bcr (mentor)
Obtained from: NetBSD
MFC after: 4 days
Differential Revision: https://reviews.freebsd.org/D8105

sbin/shutdown: Support time units as in 'shutdown -r +5sec'

Units supported: s, sec, m, min, h, hour.

Differential Revision: https://reviews.freebsd.org/D1272

Add simple example.

Remove trailing whitespace in the shutdown(8) manual.

MFC after: 1 week

Improvements to the shutdown(8) manual.

PR: 158807
Submitted by: arundel
MFC after: 1 week

For compatibility with Linux and Solaris add poweroff(8).

It is implemented as a hard link to shutdown(8) and it is equivalent of:

# shutdown -p now

While I'm here put one line of usage into one line of C code so it is easier to
grep(1) and separate unrelated code with empty line.

MFC after: 2 weeks

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Note that when shutdown is run without options, it will place
the system into single user mode at the time specified.

PR: 129765

- Import the HEAD csup code which is the basis for the cvsmode work.

Use the standard section name.

Mechanically kill hard sentence breaks.

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core, imp

Fixed the abuses of .Ql visible on stderr in troff mode.

PR: docs/37176

s/filesystem/file system/g as discussed on -developers

The .Nm utility.

more file system > filesystem

Document how to cancel a scheduled shutdown.

Obtained from: OpenBSD

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: use canonical form of .Dd macro.

mdoc(7) police: use the new features of the Nm macro.

$Id$ -> $FreeBSD$

Signal init(8) instead of executing halt(8) or reboot(8)
when halting or rebooting the system. It benefits from
running /etc/rc.shutdown by init(8).

``-o'' flag is provided for backward compatibility.

PR: 5451
Discussed with: des

Minor cleanups to shutdown(8):

- Make the -k "don't actually halt" flag incompatible with
the halt/reboot options -h, -p, and -r.
- The -n "don't sync" option is ignored if -k is specified.
Issue a warning message.
- Compute the actual shutdown time written to /var/run/nologin
correctly in the case of "now" being specified.

Move nologin from /etc to /var/run. This means one less file that has
to be written to /etc.

The only essential change is in paths.h, so any third-party software
written correctly will pick it up in the next rebuild.

Reviewed by: the committers list (actually an old version)

Merged from Lite2 (just an English fix or pun removal).

Updated date. I think dates in man pages should be changed at least
when a new feature is described.

Fixed disordered options in synopsis.

Fixed missing `p' flag in synopsis.

Broken in: previous commit

Add a '-p' flag to shutdown which corresponds to the '-p' flag to halt,
requesting a system power-off after shutdown.

Correct use of .Nm. Add rcsid. Do not dot terminate err(3) strings. Spelling.

Add Xref to nologin(5).

Import Lite2's src/sbin, except for XNSrouted and routed. All relevant
files in src/sbin are off the vendor branch, so this doesn't change the
active versions.

Yanked out (now obsolete) support for 'fastboot'.

BSD 4.4 Lite sbin Sources

Note: XNSrouted and routed NOT imported here, they shall be imported with
usr.sbin.