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4<!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
5 %release;
6]>
7<article xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
8<info><title>&os; &release.current; Release Notes</title>
9  
10
11  <author><orgname>The &os; Project</orgname></author>
12
13  <pubdate>$FreeBSD: releng/10.0/release/doc/en_US.ISO8859-1/relnotes/article.xml 259786 2013-12-23 20:21:46Z gjb $</pubdate>
14
15  <copyright>
16    <year>2000</year>
17    <year>2001</year>
18    <year>2002</year>
19    <year>2003</year>
20    <year>2004</year>
21    <year>2005</year>
22    <year>2006</year>
23    <year>2007</year>
24    <year>2008</year>
25    <year>2009</year>
26    <year>2010</year>
27    <year>2011</year>
28    <year>2012</year>
29    <year>2013</year>
30    <holder role="mailto:doc@FreeBSD.org">The &os; Documentation Project</holder>
31  </copyright>
32
33  <legalnotice xml:id="trademarks" role="trademarks">
34    &tm-attrib.freebsd;
35    &tm-attrib.ibm;
36    &tm-attrib.ieee;
37    &tm-attrib.intel;
38    &tm-attrib.sparc;
39    &tm-attrib.general;
40  </legalnotice>
41
42  <abstract>
43    <para>The release notes for &os; &release.current; contain a summary
44      of the changes made to the &os; base system on the
45      &release.branch; development line.
46      This document lists applicable security advisories that were issued since
47      the last release, as well as significant changes to the &os;
48      kernel and userland.
49      Some brief remarks on upgrading are also presented.</para>
50  </abstract>
51</info>
52
53<sect1 xml:id="intro">
54  <title>Introduction</title>
55
56  <para>This document contains the release notes for &os;
57    &release.current;.  It
58    describes recently added, changed, or deleted features of &os;.
59    It also provides some notes on upgrading
60    from previous versions of &os;.</para>
61
62  <para releasetype="current">The &release.type; distribution to which these release notes
63    apply represents the latest point along the &release.branch; development
64    branch since &release.branch; was created.  Information regarding pre-built, binary
65    &release.type; distributions along this branch
66    can be found at <uri xlink:href="&release.url;">&release.url;</uri>.</para>
67
68  <para releasetype="snapshot">The &release.type; distribution to which these release notes
69    apply represents a point along the &release.branch; development
70    branch between &release.prev; and the future &release.next;.
71    Information regarding
72    pre-built, binary &release.type; distributions along this branch
73    can be found at <uri xlink:href="&release.url;">&release.url;</uri>.</para>
74
75  <para releasetype="release">This distribution of &os; &release.current; is a
76    &release.type; distribution.  It can be found at <uri xlink:href="&release.url;">&release.url;</uri> or any of its mirrors.  More
77    information on obtaining this (or other) &release.type;
78    distributions of &os; can be found in the <link xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
79    &os;</quote> appendix</link> to the <link xlink:href="&url.books.handbook;/">&os;
80    Handbook</link>.</para>
81
82  <para>All users are encouraged to consult the release errata before
83    installing &os;.  The errata document is updated with
84    <quote>late-breaking</quote> information discovered late in the
85    release cycle or after the release.  Typically, it contains
86    information on known bugs, security advisories, and corrections to
87    documentation.  An up-to-date copy of the errata for &os;
88    &release.current; can be found on the &os; Web site.</para>
89
90</sect1>
91
92<sect1 xml:id="new">
93  <title>What's New</title>
94
95  <para>This section describes
96    the most user-visible new or changed features in &os;
97    since &release.prev;.
98    In general, changes described here are unique to the &release.branch;
99    branch unless specifically marked as &merged; features.
100  </para>
101
102  <para>Typical release note items
103    document recent security advisories issued after
104    &release.prev;,
105    new drivers or hardware support, new commands or options,
106    major bug fixes, or contributed software upgrades.  They may also
107    list changes to major ports/packages or release engineering
108    practices.  Clearly the release notes cannot list every single
109    change made to &os; between releases; this document focuses
110    primarily on security advisories, user-visible changes, and major
111    architectural improvements.</para>
112
113  <sect2 xml:id="security">
114    <title>Security Advisories</title>
115
116    <para/>
117
118  </sect2>
119
120  <sect2 xml:id="kernel">
121    <title>Kernel Changes</title>
122
123    <para revision="248508">The use of unmapped VMIO buffers eliminates the need to perform
124      TLB shootdown for mapping on buffer creation and reuse, greatly reducing the
125      amount of IPIs for shootdown on big-SMP machines and eliminating up to 25-30%
126      of the system time on i/o intensive workloads.</para>
127
128    <para arch="amd64" revision="254466">The maximum amount of memory the &os; kernel
129      can address has been increased from 1TB to 4TB.</para>
130
131    <para>A new &man.cpuset.2; API has been added
132      for thread to CPU binding and CPU resource grouping and
133      assignment.  The &man.cpuset.1; userland utility has been added
134      to allow manipulation of processor sets.</para>
135
136    <para role="merged">The &man.ddb.4; kernel debugger now has an output capture
137      facility.  Input and output from &man.ddb.4; can now be captured
138      to a memory buffer for later inspection using &man.sysctl.8; or
139      a textdump.  The new <command>capture</command> command controls
140      this feature.</para>
141
142    <para role="merged">The &man.ddb.4; debugger now supports a simple scripting
143      facility, which supports a set of named scripts consisting of a
144      set of &man.ddb.4; commands.  These commands can be managed from
145      within &man.ddb.4; or with the use of the new &man.ddb.8;
146      utility.  More details can be found in the &man.ddb.4; manual
147      page.</para>
148
149    <para role="merged">The kernel now supports a new textdump format of kernel
150      dumps.  A textdump provides higher-level information via
151      mechanically generated/extracted debugging output, rather than a
152      simple memory dump.  This facility can be used to generate brief
153      kernel bug reports that are rich in debugging information, but
154      are not dependent on kernel symbol tables or precisely
155      synchronized source code.  More information can be found in the
156      &man.textdump.4; manual page.</para>
157
158    <para>Kernel support for M:N threading has been removed.  While
159      the KSE (Kernel Scheduled Entities) project was quite successful
160      in bringing threading to FreeBSD, the M:N approach taken by the
161      KSE library was never developed to its full potential.
162      Backwards compatibility for applications using KSE threading
163      will be provided via &man.libmap.conf.5; for dynamically linked
164      binaries.  The &os; Project greatly appreciates the work of
165      &a.julian;, &a.deischen;, and &a.davidxu; on KSE support.</para>
166
167    <para>The &os; kernel now exports information about certain kernel
168      features via the <varname>kern.features</varname> sysctl tree.
169      The &man.feature.present.3; library call provides a convenient
170      interface for user applications to test the presence of
171      features.</para>
172
173    <para arch="amd64">The &os; kernel now has support for large
174      memory page mappings (<quote>superpages</quote>).</para>
175
176    <para arch="amd64,i386,ia64,powerpc" role="merged">The ULE
177      scheduler is now the default process scheduler
178      in <filename>GENERIC</filename> kernels.</para>
179
180    <para arch="amd64,i386" revision="240135">Support was added for
181      the new Intel on-CPU Bull Mountain random number
182      generator, found on IvyBridge and supposedly later CPUs,
183      accessible with RDRAND instruction.</para>
184
185    <sect3 xml:id="kernel-virtualization">
186      <title>Virtualization support</title>
187      <para arch="amd64" revision="245652">The BSD Hypervisor, &man.bhyve.8; is included
188        with &os;.  &man.bhyve.8; requires Intel CPUs with VT-x and Extended Page Table (EPT)
189        support. These features are on all Nehalem models and beyond
190        (e.g. Nehalem and newer), but not on the lower-end Atom CPUs.</para> 
191  
192      <para revision="227652">&man.virtio.4; support has been added.  &man.virtio.4; is the
193        name for the paravirtualization interface developed for the Linux KVM, but
194        since adopted to other virtual machine hypervisors (with the notable exception of Xen).
195        This work brings in a BSD-licensed clean-room implementation of the virtio kernel drivers
196        for disk IO (&man.virtio_blk.4; and &man.virtio_scsi.4;), network IO (&man.vtnet.4;),
197        memory ballooning (&man.virtio_balloon.4;), and PCI.
198        Tested with on Qemu/KVM, VirtualBox, and &man.bhyve.4;.</para>
199  
200      <para arch="amd64,i386" revision="255524">Paravirtualized drivers which
201        support Microsoft Hyper-V have been imported and made
202        part of the amd64 GENERIC kernel.  For i386, these drivers are not part of
203        GENERIC, so the following lines must be added to
204        <filename>/boot/loader.conf</filename> to load these drivers:
205        <programlisting>hv_ata_pci_disengage_load="YES"
206hv_netsvc_load="YES"
207hv_utils_load="YES"
208hv_vmbus_load="YES"</programlisting>  Alternatively, the Hyper-V drivers can be added to the i386
209        kernel by adding <literal>device hyperv</literal> to the kernel config, and then
210        recompiling the kernel.</para>
211
212      <para revision="254738">The &man.vmx.4; driver has been added.
213        &man.vmx.4; is a VMware VMXNET3 ethernet driver ported from
214        OpenBSD.</para>
215
216      <para revision="255744" arch="amd64,i386">Xen PVHVM virtualization is now
217        part of the GENERIC kernel.</para>
218
219    </sect3>
220
221    <sect3 xml:id="kernel-arm">
222      <title>ARM support</title>
223
224      <para revision="239922">Raspberry PI support has been added.
225        Refer to these <link xlink:href="http://kernelnomicon.org/?p=164">setup instructions</link>
226        and <link xlink:href="http://www.raspberrypi.org/quick-start-guide">quick start
227        guide</link>.</para>
228  
229      <para revision="253396">The default ABI on ARM is now the ARM EABI. This brings a number of
230        improvements and allows future support for VFP and Thumb-2.</para> 
231  
232      <para revision="239268">ARM support has been greatly improved, including support
233        for ARMv6 and ARMv7, SMP and thread-local storage (TLS).
234        Additionally support for some newer SoC like the MV78x60 and OMAP4 was added.
235        See <link xlink:href="http://lists.freebsd.org/pipermail/freebsd-arm/2012-August/003757.html">this announcement</link>
236        for further details.</para>
237  
238      <para revision="254918">Superpages support on ARM has been added.  Superpages support
239        provides improved performance and scalability by allowing TLB
240        translations to dynamically cover large physical memory regions.
241        All ARMv6 and ARMv7-based platforms can take advantage of this feature.
242        See <link xlink:href="https://wiki.freebsd.org/ARMSuperpages">this page</link>
243        for further details.</para>
244
245    </sect3>
246
247    <sect3 xml:id="boot">
248      <title>Boot Loader Changes</title>
249
250      <para arch="amd64,i386" role="merged">The BTX kernel used by the boot
251	loader has been changed to invoke BIOS routines from real
252	mode.  This change makes it possible to boot &os; from USB
253	devices.</para>
254
255      <para arch="amd64,i386" role="merged">A new gptboot boot loader has
256        been added to support booting from a GPT labeled disk.  A
257        new <command>boot</command> command has been added to
258        &man.gpt.8;, which makes a GPT disk bootable by writing the
259        required bits of the boot loader, creating a new boot
260        partition if required.</para>
261
262    </sect3>
263
264    <sect3 xml:id="proc">
265      <title>Hardware Support</title>
266
267      <para role="merged">The &man.cmx.4; driver, a driver for Omnikey CardMan 4040
268        PCMCIA smartcard readers, has been added.</para>
269
270      <para>The &man.syscons.4; driver now supports Colemak keyboard layout.</para>
271
272      <para role="merged">The &man.uslcom.4; driver, a driver for Silicon
273        Laboratories CP2101/CP2102-based USB serial adapters, has been
274        imported from OpenBSD.</para>
275
276      <sect4 xml:id="mm">
277	<title>Multimedia Support</title>
278
279        <para revision="240609">Support for version 2.0 of the USB Audio reference design
280          has been added. New devices should support higher bandwidth,
281          increased sampling frequency and wider dynamic range.</para>
282
283      </sect4>
284
285      <sect4 xml:id="net-if">
286	<title>Network Interface Support</title>
287
288	<para>The &man.ale.4; driver has been added to provide support
289	  for Atheros AR8121/AR8113/AR8114 Gigabit/Fast Ethernet controllers.</para>
290
291	<para>The &man.em.4; driver has been split into two drivers
292	  with some common parts.  The &man.em.4; driver will continue
293	  to support adapters up to the 82575, as well as new
294	  client/desktop adapters.  A new &man.igb.4; driver
295	  will support new server adapters.</para>
296
297	<para>The &man.jme.4; driver has been added to provide support
298	  for PCIe network adapters based on JMicron JMC250 Gigabit
299	  Ethernet and JMC260 Fast Ethernet controllers.</para>
300
301	<para>The &man.malo.4; driver has been added to provide
302	  support for Marvell Libertas 88W8335 based PCI network
303	  adapters.</para>
304
305	<para>The firmware for the &man.mxge.4; driver has been
306	  updated from 1.4.25 to 1.4.29.</para>
307
308	<para>The &man.sf.4; driver has been overhauled to improve its
309	  performance and to add support for checksum offloading.  It
310	  should also work on all architectures.</para>
311
312	<para>The &man.re.4; driver has been overhauled to fix a
313	  number of issues.  This driver now has Wake On LAN (WOL)
314	  support.</para>
315
316	<para>The &man.vr.4; driver has been overhauled to fix a
317	  number of outstanding issues.  It also now works on all
318	  architectures.</para>
319
320	<para arch="amd64,i386" role="merged">The &man.wpi.4; driver has
321	  been updated to include a number of stability fixes.</para>
322
323	<para revision="248925">The &man.cxgbe.4; driver has been updated to support
324	  40G/10G Ethernet NICs based on Chelsio's Terminator 5 (T5) ASIC.</para>
325
326	<para revision="256694">The iw_cxgbe driver has been added.  This is an
327	  experimental iWARP/RDMA driver
328	  (kernel verbs only) for Chelsio's T4 and T5 based cards.</para>
329
330	<para revision="255932">The Open Fabrics Enterprise Distribution (OFED) and
331	  OFED Infiniband core has been
332	  updated to the same version as supplied by Linux version 3.7</para>
333
334	<para revision="255932">The Mellanox Infiniband driver has been updated to firmware
335	  version 2.30.3200 for ConnectX3 NICs.  Support has been added for ConnectX3 VPI NICs, where
336	  each port can be used as Infiniband 56 GB/s or Ethernet 40 GB/s.  Support has been added
337	  for dynamically loading kernel modules for Infiniband core (ibcore) and
338	  IP over Infiniband (ipoib).</para>
339
340	<para revision="227614">&man.netmap.4; has been added.  &man.netmap.4; is a framework for
341          high-performance direct-to-hardware packet IO, offering low latency and high PPS
342          rates to userland applications while bypassing any kernel-side packet processing.
343          With &man.netmap.4; it is trivially possible to fully saturate a 10 Gbps network interface with
344          minimal packet sizes.  For more information, see:
345          <link xlink:href="http://info.iet.unipi.it/~luigi/netmap/">Netmap Project</link>.</para> 
346
347      </sect4>
348    </sect3>
349
350    <sect3 xml:id="net-proto">
351      <title>Network Protocols</title>
352
353      <para revision="228571">&man.carp.4; has been rewritten to make addresses
354        more sane from the viewpoint of routing daemons such as
355        quagga/zebra. It also brings support for a single redundant
356        address on the subnet (carpdev), switching state with
357        &man.ifconfig.8;, better locking and using modern kernel
358        interfaces to allocate multicast memberships.
359        Configuration of the CARP protocol via &man.ifconfig.8; has changed, as well as format
360	of CARP events submitted to &man.devd.8; has changed. See &man.carp.4;
361	for more information. The arpbalance feature of &man.carp.4; is currently
362	not supported anymore.</para>
363
364      <para revision="240233">The &man.pf.4; firewall now supports fine-grain locking
365        and better utilization on multi-cpu machines resulting in
366        significant improvements in performance.</para>
367
368      <para revision="250700">Support for up to 65536 routing tables has been
369        introduced.</para>
370
371      <para revision="248552">Support for setting/matching differentiated services
372        codepoints (DSCP) in IP header has been added to
373        &man.ipfw.8;.</para>
374
375    </sect3>
376
377    <sect3 xml:id="disks">
378      <title>Disks and Storage</title>
379
380      <para role="merged">The &man.aac.4; driver now supports volumes larger than
381        2TB in size.</para>
382
383      <para>The &man.ata.4; driver now supports a spindown command for
384        disks; after a configurable amount of time, if no requests
385        have been received for a disk, the disk will be spun down
386        until the next request.  The &man.atacontrol.8; utility now
387        supports a <command>spindown</command> command to configure
388        this feature.</para>
389
390      <para role="merged">The &man.hptrr.4; driver has been updated to version 1.2
391        from Highpoint.</para>
392
393      <para revision="240616">&man.nvme.4; has been added and provides NVM Express support.
394        NVM Express is an optimized register interface, command set and feature set of
395        PCI Express (PCIe)-based Solid-State Drives (SSDs).  For more information,
396        see <link xlink:href="http://http://www.nvmexpress.org/">nvmexpress.org</link>.</para>
397
398    </sect3>
399
400    <sect3 xml:id="fs">
401      <title>File Systems</title>
402
403      <para revision="255570">A new kernel-based iSCSI target and initiator has been
404        added</para>
405
406      <para revision="243246">UFS filesystems can now be enlarged with &man.growfs.8; while
407        mounted read-write. This is especially useful for virtual
408        machines, allowing the addition of more harddrive space without
409        interruption of service.</para>
410
411      <para revision="241519">A state of the art FUSE implementation is now part of the
412        base system. It allows the use of nearly all fusefs file
413        systems</para>
414
415      <sect4 xml:id="fs-zfs">
416	<title>ZFS</title>
417
418        <para revision="">&man.bsdinstall.8; now supports installing
419          ZFS on the root file system.  It includes a single configuration menu
420          that allows you to select all of the required details, including
421          which drives to use, what ZFS RAID level to use (taking into consideration
422          the selected number of drives), GPT or MBR, GELI encryption, forcing 4K sectors,
423          pool name, etc.</para>
424
425        <para revision="240868">TRIM support has been added for
426          ZFS.</para>
427
428        <para revision="246586">Support for the high performance LZ4 compression algorithm
429          has been added to ZFS. LZ4 is usually faster and can achieve a
430          higher compression ratio than LZJB, the default compression
431          algorithm</para>
432
433        <para revision="252140">Support for L2ARC compression has been added to ZFS.</para>
434
435        <para revision="243524">The zio nop-write improvement from Illumos
436          was imported into &os;. To reduce I/O, nop-write skips overwriting
437          data if the checksum (cryptographically secure) of new data
438          matches the checksum of existing data. It also saves space if
439          snapshots are in use.  This improvement only works only on
440          datasets with enabled compression, disabled deduplication and
441          sha256 checksums.</para>
442
443        <para>ZFS will now compare the checksums of incoming writes to
444          the checksum of the existing on-disk data and avoid issuing any
445          write I/O for data that has not changed. This will reduce I/O
446          as well as space usage because if the old block is referenced
447          by a snapshot, both copies of the block are kept even though
448          both contain the same data.</para>
449
450      </sect4>
451
452    </sect3>
453
454  </sect2>
455
456  <sect2 xml:id="userland">
457    <title>Userland Changes</title>
458
459   <para revision="255321">On platforms where &man.clang.1; is the default
460      system compiler, (such as i386, amd64, arm) GCC and GNU libstdc++ are no
461      longer built by default.  &man.clang.1; and libc++ from LLVM are used on
462      these platforms by instead.  GCC 4.2.1 and libstdc++ are still built
463      and used by default on pc98 and all other platforms where &man.clang.1;
464      is not the default system compiler.
465   </para>
466
467   <para revision="251662">&man.clang.1; and llvm have been updated to
468     version 3.3 release.  Please refer to
469     <link xlink:href="http://llvm.org/releases/3.3/tools/clang/docs/ReleaseNotes.html">
470     Clang 3.3 Release Notes.</link></para>
471
472    <para role="merged" revision="255949">BIND has been replaced by &man.unbound.8; for
473      local dns resolution in the base system.  With this change, nslookup
474      and dig are no longer a part of the base system.  Users should
475      instead use &man.host.1; and &man.drill.1; Alternatively,
476      nslookup and dig can be obtained by installing the
477      dns/bind-tools port.</para>
478
479    <para revision="225937">sysinstall has been removed from the base system.
480      Auxiliary libraries and tools used by sysinstall such as libdisk, libftpio,
481      and sade have also been removed.  sysinstall has been replaced by
482      &man.bsdinstall.8; and &man.bsdconfig.8;.</para>
483
484    <para revision="256106">&man.freebsd-version.1; has been added.  This tool
485      makes a best effort to determine the version and patch level of
486      the installed kernel and userland.</para>
487
488    <para revision="255191">GNU patch has been removed from the base system, and replaced
489      by a BSD-licensed &man.patch.1; program.</para>
490
491    <para revision="241511">GNU sort has been removed from the base system, and replaced
492      by a BSD-licensed &man.sort.1; program.</para>
493
494    <para revision="235723">Berkely yacc (byacc) has been imported
495      from <link xlink:href="http://invisible-island.net/byacc/">invisible island</link>.
496      This brings bison compatibilities to &man.yacc.1; while preserving full
497      backwards compatibility with previous version of &man.yacc.1;.</para>
498
499    <para revision="250881">&man.lex.1; has been replaced by flex 2.5.37</para>
500
501    <para revision="250699">&man.make.1; has been replaced with the 
502      "Portable" BSD make tool (bmake) from NetBSD.</para>
503
504    <para role="merged">The &man.adduser.8; utility now supports
505      a <option>-M</option> option to set the mode of a new user's
506      home directory.</para>
507
508    <para>BSD-licensed versions of &man.ar.1; and &man.ranlib.1;,
509      based on <filename>libarchive</filename>, have replaced the GNU
510      Binutils versions of these utilities.</para>
511
512    <para>BSD-licensed versions of &man.bc.1; and &man.dc.1; have
513      replaced their GNU counterparts.</para>
514
515    <para role="merged">&man.chflags.1; now supports a <option>-v</option> flag for
516      verbose output and a <option>-f</option> flag to ignore errors
517      with the same semantics as (for example)
518      &man.chmod.1;.</para>
519
520    <para>For compatibility with other implementations, &man.cp.1; now
521      supports a <option>-a</option> flag, which is equivalent to
522      specifying the <option>-RrP</option> flags.</para>
523
524    <para>BSD-licensed version of &man.cpio.1; based on
525      <filename>libarchive</filename>, has replaced the GNU cpio.
526      Note that the GNU cpio is still installed as
527      <filename>gcpio</filename>.</para>
528
529    <para>The &man.env.1; program now supports <option>-u
530      <replaceable>name</replaceable></option>
531      which will completely unset the given variable
532      <replaceable>name</replaceable> by removing it from the environment,
533      instead of just setting it to a null value.</para>
534
535    <para>The &man.fdopendir.3; library function has been added.</para>
536
537    <para role="merged">The &man.fetch.3; library now support HTTP 1.1
538      If-Modified-Since behavior.  The &man.fetch.1; program now
539      supports <option>-i <replaceable>filename</replaceable></option>
540      which will only download the specified HTTP URL if the content
541      is newer than <replaceable>filename</replaceable>.</para>
542
543    <para>&man.find.1; has been enhanced by the addition of a number
544      of primaries that were present in GNU find but not &os;
545      &man.find.1;.</para>
546
547    <para>&man.kgdb.1; now supports a new <command>add-kld</command>
548      command to make it easier to debug crash dumps with kernel
549      modules.</para>
550
551    <para>The &man.ls.1; program now supports a <option>-D</option>
552      option to specify a date format string to be used with the long
553      format (<option>-l</option>) output.</para>
554
555    <para>&man.nc.1; now supports a <option>-O</option> switch to
556      disable the use of TCP options.</para>
557
558    <para>&man.nc.1;'s <option>-o</option> switch has been deprecated.
559      It will be removed in a future release.</para>
560
561    <para>The &man.ping6.8; utility now returns <literal>2</literal>
562      when the packet transmission was successful but no responses
563      were received (this is the same behavior as &man.ping.8;).
564      It returned a non-zero value before this change.</para>
565
566    <para>The &man.procstat.1; utility has been added to display
567      detailed information about processes.</para>
568
569    <para role="merged">The &man.realpath.1; utility now supports
570      a <option>-q</option> flag to suppress warnings; it now also
571      accepts multiple paths on its command line.</para>
572
573    <para>&man.sh.1; has many bug fixes, some new features, and will now
574      refuse to parse some invalid scripts.  Additionally, it now
575      has filename completion and defaults to the &quot;emacs&quot; editing
576      mode.</para>
577
578    <para>The &man.split.1; utility now supports a <option>-n</option>
579      flag to split a file into a certain number of chunks.</para>
580
581    <para>The &man.tar.1; utility now supports a <option>-Z</option>
582      flag to enable &man.compress.1;-style
583      compression/decompression.</para>
584
585    <para>The &man.tar.1; utility now supports a
586      <option>--numeric-owner</option> flag to ignore user/group names
587      on create and extract.</para>
588
589    <para>The &man.tar.1; utility now supports an
590      <option>-S</option> flag to sparsify files on extraction.</para>
591
592    <para>The &man.tar.1; utility now supports a <option>-s</option>
593      flag to substitute filenames based on the specified regular
594      expression.</para>
595
596    <para>The &man.tcgetsid.3; library function has been added to
597      return the process group ID for the session leader for the
598      controlling terminal.  It is defined in IEEE Std 1003.1-2001
599      (POSIX).</para>
600
601    <para>&man.top.1; now supports a <option>-P</option> flag to
602      provide per-CPU usage statistics.</para>
603
604    <para>&man.zdump.8; is now working properly on 64 bit architectures.
605      </para>
606
607    <para>&man.traceroute.8; now has the ability to print the AS
608      number for each hop with the new <option>-a</option> switch; a
609      new <option>-A</option> option allows selecting a particular
610      WHOIS server.</para>
611
612    <para>&man.traceroute6.8; now supports a <option>-U</option> flag
613      to send probe packets with no upper-layer protocol, rather than
614      the usual UDP probe packets.</para>
615
616    <sect3 xml:id="rc-scripts">
617      <title><filename>/etc/rc.d</filename> Scripts</title>
618
619      <para/>
620
621    </sect3>
622  </sect2>
623
624  <sect2 xml:id="contrib">
625    <title>Contributed Software</title>
626
627    <para revision="251300">&man.jemalloc.3; has been updated to 3.4.0.
628      See <link xlink:href="http://www.facebook.com/jemalloc/">this link</link>.
629      for more details.</para>
630
631    <para role="merged"><application>AMD</application> has been updated from 6.0.10
632      to 6.1.5.</para>
633
634    <para role="merged"><application>awk</application> has been updated from 1 May
635      2007 release to the 23 October 2007 release.</para>
636
637    <para role="merged"><application>bzip2</application> has been updated from 1.0.4
638      to 1.0.5.</para>
639
640    <para revision="251794"><application>CVS</application> has been removed from the
641    base system, but is still available from ports</para>
642
643    <para revision="251886">Subversion has been imported into the base system and
644      is installed as <application>svnlite</application>.  <application>svnlite</application>
645      should only be used for checking out &os; source and committing, and does not
646      replace the full Subversion port.</para>
647
648    <para revision="234449"><application>file</application> has been updated to 5.11.</para>
649
650    <para revision="252726"><application>hostapd</application> has been
651      updated from 0.5.8 to 0.5.10.</para>
652
653    <para><application>IPFilter</application> has been updated to 5.1.2.</para>
654
655    <para revision="250592"><application>less</application> has been updated to
656      v458.</para>
657
658    <para><application>ncurses</application> has been updated from
659      to 5.7-20081102.</para>
660
661    <para role="merged"><application>OpenSSH</application> has been updated
662      to 6.4.</para>
663
664    <para revision="236109"><application>OpenPAM</application> has been updated to
665      the Micrampelis release.</para>
666
667    <para role="merged"><application>sendmail</application> has been updated from
668      8.14.1 to 8.14.7.</para>
669
670    <para role="merged">The timezone database has been updated from
671      the <application>tzdata2008h</application> release to
672      the <application>tzdata2009m</application> release.</para>
673
674    <para>The stdtime part of libc, &man.zdump.8; and &man.zic.8;
675      have been updated from the <application>tzcode2004a</application>
676      release to the <application>tzcode2009h</application> release.
677      If you have upgraded from source or via the &man.freebsd-update.8;,
678      then please run &man.tzsetup.8; to install a new /etc/localtime.
679      </para>
680
681    <para revision="252726"><application>WPA Supplicant</application> has been
682      updated to 2.0.</para>
683
684    <para role="merged"><application>xz</application> has been updated
685      from snapshot as of 12 April 2010 to 5.0.0.</para>
686
687    <para revision="258231" role="merged">&man.nvi.1; has been updated to 2.1.2.</para>
688
689    <para revision="254225">&man.nvi.1; supports wide character locales.</para>
690
691  </sect2>
692
693  <sect2 xml:id="ports">
694    <title>Ports/Packages Collection Infrastructure</title>
695
696    <para revision="257444">The pkg_add, pkg_create, pkg_delete, pkg_info,
697      pkg_updating, and pkg_version utilities have been removed.
698      &man.pkg.7; must now be used to install binary packages.  &man.pkg.7;
699      is the next generation &os; package manager, also referred to as "pkgng".</para>
700
701  </sect2>
702
703  <sect2 xml:id="releng">
704    <title>Release Engineering and Integration</title>
705
706    <para role="merged">The supported version of
707      the <application>GNOME</application> desktop environment
708      (<package>x11/gnome2</package>) has been
709      updated from 2.20.1 to 2.22.</para>
710
711  </sect2>
712
713  <sect2 xml:id="doc">
714    <title>Documentation</title>
715
716    <para/>
717
718  </sect2>
719</sect1>
720
721<sect1 xml:id="upgrade">
722  <title>Upgrading from previous releases of &os;</title>
723
724  <para arch="amd64,i386">Beginning with &os; 6.2-RELEASE,
725    binary upgrades between RELEASE versions (and snapshots of the
726    various security branches) are supported using the
727    &man.freebsd-update.8; utility.  The binary upgrade procedure will
728    update unmodified userland utilities, as well as unmodified GENERIC or
729    SMP kernels distributed as a part of an official &os; release.
730    The &man.freebsd-update.8; utility requires that the host being
731    upgraded have Internet connectivity.</para>
732
733  <para>Source-based upgrades (those based on recompiling the &os;
734    base system from source code) from previous versions are
735    supported, according to the instructions in
736    <filename>/usr/src/UPDATING</filename>.</para>
737
738  <important>
739    <para>Upgrading &os; should, of course, only be attempted after
740      backing up <emphasis>all</emphasis> data and configuration
741      files.</para>
742  </important>
743</sect1>
744</article>
745