truncate.1: improve the example section

Notably:
* spell "Megabytes" as "megabytes" consistently;
* remove a stray asterisk from the /boot/kernel/kernel listing
* avoid using a shell prompt in th

truncate.1: improve the example section

Notably:
* spell "Megabytes" as "megabytes" consistently;
* remove a stray asterisk from the /boot/kernel/kernel listing
* avoid using a shell prompt in the examples consistently
* fixes the size parameter
* add an example how to increase the file size

PR: 273997
MFC after: 1 week

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Remove $FreeBSD$: two-line nroff pattern

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

truncate(1): Fix missing -d option manpage

Mention that either one of the -r, -s and -d options must be specified.

Sponsored by: The FreeBSD Foundation

truncate(1): Add hole-punching support

This commit adds hole-punching support to the truncate(1) utility. If
the option -d is specified, truncate(1) performs zeroing, and if
possible hole-punching i

truncate(1): Add hole-punching support

This commit adds hole-punching support to the truncate(1) utility. If
the option -d is specified, truncate(1) performs zeroing, and if
possible hole-punching in case the operation is supported by the
underlying file system of the specified files.

Sponsored by: The FreeBSD Foundation
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D31556

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MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

Merge ^/head r363583 through r363738.

truncate(1): Add EXAMPLES section

Add four simple examples showing the use of -c, -r and -s

Approved by: manpages (bcr@)
Differential Revision: https://reviews.freebsd.org/D25774

truncate: Add support for -s % and /

% round up to the multiple size and / round down
This is compatible with gnu truncate.
Add tests and document in the man page.

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)

Merge head from 7/28

Sync to HEAD@r269943.

use .Mt to mark up email addresses consistently (part3)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

The -r option can also cause the files to be extended (not
necessarily truncated).

Markup fixes.

Allow to specify size in terabytes by using T or t suffix.
This speeds up my testing a bit. Because truncate(1) doesn't allocate
blocks on file system before they are used, it is very useful to
emula

Allow to specify size in terabytes by using T or t suffix.
This speeds up my testing a bit. Because truncate(1) doesn't allocate
blocks on file system before they are used, it is very useful to
emulate huge file systems:

# truncate -s 16T fs.img
# mdconfig -a -f fs.img
# newfs /dev/mdX

(-t swap can be used as well)

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Added the EXIT STATUS section where appropriate.

Make size suffix case insensitive.

PR: bin/27604
Submitted by: David Xu <davidx@viasoft.com.cn>

* Update author's e-mail address.

* When the author of an utility also wrote its manual page (a rarety, I
know), it is not necessary to say that the utility "and this manual
page" were written b

* Update author's e-mail address.

* When the author of an utility also wrote its manual page (a rarety, I
know), it is not necessary to say that the utility "and this manual
page" were written by the author.

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Use the .Cm macro to mark up the modifiers of the -s flag's size argument.

mdoc(7) police: utilize the new .Ex macro.

Remove whitespace at EOL.

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

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

Merge the truncate(1) utility onto the RELENG_4 branch and adjust
the HISTORY section to reflect the first release of FreeBSD in
which this utility will appear.

truncate.c:
Do not include unused header files.
Add rcsid.
Change copyright.

truncate.1:
Add AUTHORS section.

Submitted by: charnier