script: handle terminal resize on SIGWINCH

Add a -w flag to forward terminal resize events on to the child, which
can be useful in some circumstances to avoid terminal corruption.

Reviewed by: des
Co-authored-by: Xavier Beaudouin <xavier.beaudouin@klarasystems.com>
Sponsored by: Modirum MDPay
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D44167

usr.bin: 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/

script: Correct -F in man page and usage string.

Sponsored by: Klara, Inc.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D37138

script: use %n at the end of default tstamp_fmt

Since we are only outputting time-stamps when they differ
ending it with a newline, interferes with the output less.

script add -T fmt to print time-stamps

script -r is useful for recording time-stamps of when output
happened. With -T, rather than playback the script in real-time
we simply print the time-stamps to show when the output happened.

This is very useful for example, for analyzing boot time activity.

If the fmt provided contains no % characters the default
%n@ %s [%Y-%m-%d %T]
is used, which lends itself to analysis by tools as well as humans.

Sponsored by: Juniper Networks, Inc.

Reviewed by: allanjude
Differential Revision: https://reviews.freebsd.org/D34511

Add some examples to script.1

While here:

- Split synopsis into two parts. The first explains how to record
sessions, while the second one explains how to replay (some of)
the recorded sessions.
- Fix the -width argument of the environment variables list.

MFC after: 1 week

Improve readability of the options list

MFC after: 3 days

Bump date for r365052

Have script accept and ignore -e for Linux compat

In the util-linux version of script, it will always exit with succes.
Except when run with -e, in which case it will have the exit value of
the child. BSD Script already uses the child's exit value for its exit
value. Some config and other helper scripts depend on being able to
specify -e. Accept it for compatibility since we'll already to the
right thing, but otherwise we ignore it.

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

Fix SEE ALSO.

The history mechanism applies to csh.

Sponsored by: Nginx, Inc.

mdoc: sort SEE ALSO.

Add -F to flush output after each write. With this, I can
set up a pipe and allow a jr user to watch what I'm doing
by running 'script -F pipefile' on it.

While here, spell out the month in the .Dd tag like other
manual pages.

MFC'ing to 9.2.

Fix version in the .Fx macro.

Reported by: <deeptech71@gmail.com>

Add "-f" to also output filemon(4) information.

Remove contractions.

Mention when -d, -p and -r first hit FreeBSD.

Bump the document date to when the change was made (rather than when the PR
was submitted).

Suggested by: pluknet

Add d, p and r switches for recording script sessions with timing data
and playing sessions back with or without time delays.

PR: 114465
Submitted by: ighighi at gmail dot com
MFC after: 3 weeks

Fix a few grammar and mdoc nits in script.1

PR: 161088
Submitted by: Ben Kaduk ( kaduk % mit ! edu )
MFC after: 1 week
Need-MFC: 225809

When script(1) reads EOF from input it starts spinning on zero-byte
reads eating 100% CPU. Fix this by skipping select on STDIN after
reading EOF -- permanently if STDIN is not terminal and for one second
if it is.

Also after reading EOF from STDIN we have to pass it to the program
being scripted. The previous approach was to write zero bytes into the
pseudo-terminal. This does not work because zero-byte write does not
have any effect on read. Fix this by sending VEOF instead.

Submitted by: Ronald Klop <ronald-freebsd8@klop.yi.org>
Discussed with: kib, Chris Torek <chris.torek@gmail.com>
Approved by: kib
MFC after: 1 week

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

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

Fix the grammar after I added a second environmental variable.

Submitted by: wxs

+ Add the SCRIPT environmental variable to the sub-shell. Its value is
the name of the typescript file.
+ Add the 'command' argument (if supplied on the command line) to the
typescript file. This creates a more complete typescript when invoked
this way - more equal to invoking script without supplying the 'command'
argument.

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.

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

Deal with double whitespace.

Mechanically kill hard sentence breaks.

Bumped document date.
Fixed markup nit.

Fix SYNOPSIS of manual page, clustering no-arg options correctly.

Sync usage with manpage.

Introduce arguments the standard way. In .Ar command ..., ... is not an
argument, command is.

Use `The .Nm utility'

Remove whitespace at EOL.

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

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

Make a run-on sentence into two proper sentences, and clarify the meaning
a bit.

Remove more single-space hard sentence breaks.

Remove single-space hard sentence breaks. These degrade the quality
of the typeset output, tend to make diffs harder to read and provide
bad examples for new-comers to mdoc.

Fix grammar error. (missing verb)

Adjust man page: if command is specified, file name is mandatory

$Id$ -> $FreeBSD$

Mention default time between output flushes in manual page.

PR: docs/8009
Submitted by: Stefan Eggers <seggers@semyam.dinoco.de>

Fix a bunch of spelling errors.

PR: 6856
Submitted by: Josh Gilliam <josh@quick.net>

Rewrite script as a select loop rather than as a twin reader/write process.
This allows simple logging of keys sent to a session (turned on with -k).
Also allow specifying the script file flush interval.

script(1) has annoyed me with it's inflexable command argument parsing
since I first saw it. I finally needed to pass arguments through to
the spawned command badly enough (and urgently) that I threw this together.

Add usage(). Use err(3) instead of local redefinition.

BSD 4.4 Lite Usr.bin Sources