Remove $FreeBSD$: two-line nroff pattern

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

gstat(8): Bump .Dd

Forgotten in cfaa2958dc44c20f56a19fe490ee4d7c02f50bef

PR: 251313
Differential Revision: https://reviews.freebsd.org/D27815

gstat(8): Document interactive keyboard commands

gstat(8) allows for <, >, c, f, F and q while in interactive mode.

PR: 251313
Submitted by: bojan_petrovic@fastmail.fm
Approved by: manpages (0mp@)
Differential Revision: https://reviews.freebsd.org/D27815

- Add CSV output to gstat via -C flag.

Add a -C option, similar to -B, that allows gstat to produce basic CSV output
with absolute timestamps (ISO 8601, nearly.) Multiple devices are handled by
way of a single-pivot CSV table with duplicated timestamps for each object
output.

Submitted by: Nick Principe <nap__ixsystems.com>
Reviewed by: myself, imp@, asomers (earlier verison), bcr (manpages)
Sponsored by: iXsystems Inc.
Differential Revision: https://reviews.freebsd.org/D16151

Add flag -B which does the same like batch mode but without exiting after
print. Also add a new flag -s that add blocks size to statistics.

PR: 198347, 212726
Submitted by: Ben RUBSON <ben.rubson@gmail.com>
Tested by: pi
MFC After: 2 weeks.

Add an option, -p, which makes gstat(8) to only display physical providers
(those with rank of 1).

MFC after: 2 weeks

Add -o option to gstat to display "other" operatins (e.g. BIO_FLUSH).

MFC after: 1 week

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.

o Turn the batch mode on if stdout is not tty.

Submitted by: vsevolod
MFC after: 1 week

o Sync synopsis with reality. Remove BUG section -- there is
a batch mode in gpart(8) now.

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

- Allow gstat to print values to different kind of outputs.
- Introduce batch mode, where gstat will collect the numbers, print them, and
exit.
- Document batch mode in the gstat man page.

Submitted by: anders

Language tweak.

- Add support for filtering the the list of providers by a regular
expression, which makes it possible to only see interesting
providers. "f" is used inside gstat to set a filter, "F" is used to
remove current filter.
- Do not print some uninteresting values in the gstat title line.
- Do not print past the end of the screen.
- Read multiple keystrokes per "wait" when gstat is running.
- Remove a redundant != check, right after check of NULL against the
same variable ("gid").
- Use sysexits.h.
- Do not link against libkvm and libsbuf, they are not actually used.
- Fix a few style(9) issues where I had to touch nearby code anyway.

Approved by: cperciva (mentor)
MFC after: 2 weeks

Add cross-references to iostat, systat and vmstat.

Added the EXIT STATUS section where appropriate.

Add an '-a' switch to only display providers that are at least
0.1% busy.

OK'ed by: phk

Markup nits.

Add -d flag to monitor BIO_DELETE operations too

Sigh, I guess this manpage used cat(1) as a template?

Otherwise, fix the manpage to not use the second person,
and add two missing punctuation bits.

Add a small manpage.