Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

ls: Improve POSIX compatibility for -g and -n.

- Change -g (ignored for BSD 4.3 compatibility since BSD 4.4)
to use POSIX semantics of implying -l but omitting the owner's
name.

- Change -n to imply -l.

The -o option remains unchanged (POSIX defines -o as a complement to
-g that implies -l but omits group names whereas BSD defines -o to add
file flags to -l). This compromise is the same used by both NetBSD
and OpenBSD.

PR: 70813
Reviewed by: jhb, Pau Amma <pauamma@gundo.com>
Co-authored-by: John Baldwin <jhb@FreeBSD.org>
Differential Revision: https://reviews.freebsd.org/D34747

ls(1): add a -v flag to sort naturally

Add a -v flag for ls which sorts entries following a natural ordering
using strverscmp(3) (e.g. "bloem1 bloem9 bloem10" as opposed to
"bloem1 bloem10 bloem9").

Update the manual page and add a test case.

Reviewed by: pauamma, bcr
Tested by: pstef
Differential Revision: https://reviews.freebsd.org/D36407

Fix ls_tests:o_flag with ZFS TMPDIR

Unlike UFS or TMPFS, ZFS sets uarch automatically whenever a file is
updated. The test must explicitly clear uarch to be portable across
filesystems. Also, it doesn't need to run as root.

PR: 215179
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D8741

Skip ls tests that use sparse files if these are not supported.

Some of the ls(1) tests create really large sparse files to validate
the number formatting features of ls(1). Unfortunately, those tests fail
if the underlying test file system does not support sparse files, as is the
case when /tmp is mounted on tmpfs.

Before running these tests, check if the test file system supports sparse
files by using getconf(1) and skip them if not. Note that the support for
this query was just added to getconf(1) in r304694.

Reviewed by: ngie
Differential Revision: https://reviews.freebsd.org/D7609

Use require.progs with bc instead of require.files with /usr/bin/bc

This will make things more flexible if the program path changes in the future,
and the test in and of itself doesn't call /usr/bin/bc -- it just calls bc

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

Enable bin/ls testcases disabled previously because of issues with how
kyua 0.11's version of report-junit was rendering non-printable characters

Upgrade to kyua 0.12 to obtain a fixed version of the command

Output verified with python 2.7.10's xml.dom.minidom module

MFC after: 3 days
Sponsored by: EMC / Isilon Storage Division

Update ls -l tests to use mtime, not birthtime

PR: 204155
Reviewed by: ngie, rodrigc
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D4040

Remove all of the syncs

They're unnecessary as shown by further testing on my VM

Requested by: jhb

Call sync consistently using atf_check

Remove superfluous sync's

Explicitly set BLOCKSIZE to 512 in the environment

Add some more syncs to quiesce the filesystem after creating the
files to see if this fixes deterministic Jenkin failures

Merge additional testcases and improvements to bin/ls/ls_tests from
^/user/ngie/more-tests.

- Additional testcases added:
-- ls -D
-- ls -F
-- ls -H
-- ls -L
-- ls -R
-- ls -S
-- ls -T
-- ls -b
-- ls -d
-- ls -f
-- ls -g
-- ls -h
-- ls -i
-- ls -k
-- ls -l
-- ls -m
-- ls -n
-- ls -o
-- ls -p
-- ls -q/ls -w
-- ls -r
-- ls -s
-- ls -t
-- ls -u
-- ls -y
- Socket file creation is limited to the ls -F testcase, greatly speeding up
the test process
- The ls -C testcase was made more robust by limiting the number of columns
via COLUMNS and by dynamically formulating the columns/lines.
- Add `atf_test_case` before all testcase `head` functions.

X-MFC with: r284388, r288330, r288423
MFC after: 2 weeks
Sponsored by: EMC / Isilon Storage Division

Skip the B_flag testcase to stop blowing up freebsd-current@ with
"test failure emails" because kyua report-jenkins doesn't properly
escape non-printable chars

Add initial testcases for bin/ls

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division