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Date:      Fri, 18 Sep 1998 17:02:20 -0700 (PDT)
From:      Greg Lehey <grog>
To:        FreeBSD-questions@FreeBSD.ORG
Subject:   "The Complete FreeBSD", second edition: errata and addenda
Message-ID:  <199809190002.RAA05871@hub.freebsd.org>

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          Errata and addenda for the Complete FreeBSD, second edition




                         Last revision: 12 August 1998

The trouble with books is that you can't update them the way you can a web page
or any other online documentation.   The  result  is  that  most  leading  edge
computer  books are out of date almost before they are printed.  Unfortunately,
``The Complete FreeBSD'', published by Walnut  Creek,  is  no  exception.   The
second  edition  has only just been published, but already a number of bugs and
changes have surfaced.

The following is a list of modifications which go beyond  simple  typos.   They
relate  to the second edition, formatted on 16 December 1997.  If you have this
book, please check this list.  If you have the first edition of 19  July  1996,
please  check  ftp://ftp.lemis.com/pub/cfbsd/errata-1.  This  same file is also
available via the web link http://www.lemis.com/.

This list is available in four forms:

o A    PostScript    version,     suitable     for     printing     out,     at
  ftp://ftp.lemis.com/pub/cfbsd/errata-2.ps.  See  page 222 of the book to find
  out how to print out PostScript.   If  at  all  possible,  please  take  this
  document: it's closest to the original text.

  Be  careful selecting this file with a web browser: it is often impossible to
  reload the document, and you may see a previously cached version.

o An enhanced ASCII version at ftp://ftp.lemis.com/pub/cfbsd/errata-2.txt. When
  viewed  with  more  or  less,  this  version  will show some highlighting and
  underlining.  It's not suitable for direct viewing.

o An ASCII-only version at  ftp://ftp.lemis.com/pub/cfbsd/errata-2.ascii.  This
  version  is  posted  every  week to the FreeBSD-questions mailing list.  Only
  take this version if you have real problems with PostScript: I can't be  sure
  that the lack of different fonts won't confuse the meaning.

o A web version at http://www.lemis.com/errata-2.html.

All  these  modifications  have  been applied to the ongoing source text of the

                                                                         Page 1






The Complete FreeBSD


book, so if you buy a later edition, they will be in it as well.  If you find a
bug or a suspected bug in the book, please contact me at <grog@FreeBSD.org.>

General changes
_______________


o In  a  number  of  places, I suggest the use of the following command to find
  process information:

  $ ps aux | grep foo

  Unfortunately, ps is sensitive to the column width of the  terminal  emulator
  upon  which  it  is working.  This command usually works fine on a relatively
  wide xterm, but if you're running on an 80-column terminal, it  may  truncate
  exactly  the  information  you're  looking for, so you end up with no output.
  You can fix that with the w option:

  $ ps waux | grep foo

  Thanks to Sue Blake <sue@welearn.com.au> for this information


Location of the sample files
____________________________

On the 2.2.5 CD-ROM only, the location of the sample files does not  match  the
specifications  in the book (/book on the first CD-ROM).  The 2.2.5 CD-ROM came
out before the book, and it contains the files on the third (repository) CD-ROM
as  a  single  gzipped  tar file /xperimnt/cfbsd/cfbsd.tar.gz.  It contains the
following files:

drwxr-xr-x jkh/jkh           0 Oct 17 13:01 1997 cfbsd/
drwxr-xr-x jkh/jkh           0 Oct 17 13:01 1997 cfbsd/mutt/
-rw-r--r-- jkh/jkh         352 Oct 15 15:21 1997 cfbsd/mutt/.mail_aliases
-rw-r--r-- jkh/jkh        9394 Oct 15 15:22 1997 cfbsd/mutt/.muttrc
drwxr-xr-x jkh/jkh           0 Oct 17 14:02 1997 cfbsd/scripts/
-rw-r--r-- jkh/jkh       18281 Oct 16 16:52 1997 cfbsd/scripts/.fvwm2rc
-rwxr-xr-x jkh/jkh        1392 Oct 17 12:54 1997 cfbsd/scripts/install-desktop
-rw-r--r-- jkh/jkh         296 Oct 17 12:35 1997 cfbsd/scripts/.xinitrc
-rwxr-xr-x jkh/jkh         622 Oct 17 13:51 1997 cfbsd/scripts/install-rcfiles
-rw-r--r-- jkh/jkh        1133 Oct 17 13:00 1997 cfbsd/scripts/Uutry
-rw-r--r-- jkh/jkh        1028 Oct 17 14:02 1997 cfbsd/scripts/README
drwxr-xr-x jkh/jkh           0 Oct 18 19:32 1997 cfbsd/docs/

Page 2






                    Errata and addenda for the Complete FreeBSD, second edition


-rw-r--r-- jkh/jkh      199111 Oct 16 14:29 1997 cfbsd/docs/packages.txt
-rw-r--r-- jkh/jkh      189333 Oct 16 14:28 1997 cfbsd/docs/packages-by-category.txt
-rw-r--r-- jkh/jkh      188108 Oct 16 14:29 1997 cfbsd/docs/packages.ps
-rw-r--r-- jkh/jkh      226439 Oct 16 14:27 1997 cfbsd/docs/packages-by-category.ps
-rw-r--r-- jkh/jkh         788 Oct 16 15:01 1997 cfbsd/README
-rw-r--r-- jkh/jkh         248 Oct 17 11:52 1997 cfbsd/errata

To extract one of these files, say cfbsd/docs/packages.txt,  and  assuming  you
have the CD-ROM mounted as /cdrom, enter:

# cd /usr/share/doc
# tar xvzf /cdrom/xperimnt/cfbsd/cfbsd.tar.gz cfbsd/docs/packages.txt

See page 209 for more information on using tar.

These files are an early version of what is described in the book.  I'll put up
some updated versions on ftp://ftp.lemis.com/ in the near future.

Thanks to Frank McCormick <gfm@readybox.com> for drawing this to my  attention.

Chapter 8: Setting up X11
_________________________

For FreeBSD 2.2.7, this chapter has changed sufficiently to make it impractical
to  distribute  errata.   You  can  download  the   PostScript   version   from
ftp://www.lemis.com/pub/cfbsd/xsetup.ps,    or    the    ASCII   version   from
ftp://www.lemis.com/pub/cfbsd/xsetup.txt.  No HTML version is available.

Page xxxiv
__________

Before the discussion of the shell prompts in the middle of the page, add:

In this book, I recommend the use of the Bourne shell or one of its descendents
(sh,  bash,  pdksh, ksh or zsh).  With the exception of sh, they are all in the
Ports Collection.  I personally use the bash shell.

This is a personal preference, and a recommendation, but it's not the  standard
shell.   The  standard  BSD  shell  is  the  C shell (csh), which has a fuller-
featured descendent tcsh.  In particular, the standard  installation  sets  the
root  user  up with a csh.  See page 152 (in this errata) for details of how to
change the shell.



                                                                         Page 3






General changes


Page 11: Reading the handbook
_____________________________

The CD-ROM now includes Mosaic and Netscape.  Replace the last paragraph on the
page and the example on the following page with:

If  you're running X, you can use a browser like Mosaic or Netscape to read the
handbook.  Both of these programs are included on the  CD-ROM.   If  you  don't
have X running, use lynx.  To install them, enter:

$ pkg_add /cdrom/packages/All/mosaic-2.7b5.tgz
or
$ pkg_add /cdrom/packages/All/netscape-3.04.tgz
or
$ pkg_add /cdrom/packages/All/lynx-2.7.2.tgz

The  numbers  after the name (2.7b5, 3.04 and 2.7.2) may change after this book
has been printed.  Use ls to list the names if you can't find these  particular
versions.

Thanks  to Stuart Henderson <stuart@internationalschool.co.uk> for drawing this
to my attention.

Page 12: Printing the handbook
______________________________

The instructions for formatting the handbook are obsolete.  Replace the section
starting Alternatively, you can print out the handbook with the following text:

Alternatively,  you  can  print  out  the  handbook.   You  need  to  have  the
documentation  sources  (/usr/doc) installed on your system.  You can find them
on the second CD-ROM in the directory of the same name.  To install them, first
mount your CD-ROM (see page 175).  Then enter:

$ cd /cdrom/usr/doc/handbook
$ mkdir -p /usr/doc/handbook            you may need to be root for this operation
$ cp -pr * /usr/doc/handbook

You have a choice of formats for the output:

o ascii  will  give  you  plain  7-bit  ASCII output, suitable for reading on a
  character-mode terminal.



Page 4






                    Errata and addenda for the Complete FreeBSD, second edition


o html will give you HTML output, suitable for browsing with a web browser.

o latex will give you LATEX format, suitable for further  processing  with  TEX
  and LATEX.

o ps will give you PostScript output, probably the best choice for printing.

o roff  will give you output in troff source.  You can process this output with
  nroff or troff, but it's currently not very  polished.   LATEX  output  is  a
  better choice if you want to process it further.

Once  you  have  decided  your  format,  use  make to create the document.  For
example, if you decide on PostScript format, you would enter:

$ make FORMATS=ps

This creates a file handbook.ps which  you  can  then  print  to  a  PostScript
printer or with the aid of ghostscript (see page 222).

Thanks to Bob Beer <r-beer@onu.edu> for drawing this to my attention.

Page 45:  Preparing floppies for installation
_____________________________________________

Replace  the paragraph below the list of file names (in the middle of the page)
with:

The floppy set should contain the file bin.inf and the ones whose  names  start
with  bin.  followed  by  two  letters.  These other files are all 240640 bytes
long, except for the final one which is usually shorter.  Use the  MS-DOS  COPY
program  to copy as many files as will fit onto each disk (5 or 6) until you've
got all the distributions you want  packed  up  in  this  fashion.   Copy  each
distribution  into  subdirectory  corresponding  to the base name--for example,
copy the bin distribution to the files A:\BIN\BIN.INF, A:\BIN\BIN.AA and so on.

Page 80 and 81
______________

In a couple of examples, the FreeBSD partition is shown as type 164.  It should
be 165.  Thanks to an unknown contributer for this correction  (sorry,  I  lost
your name).




                                                                         Page 5






General changes


Page 88: setting up for dumping
_______________________________

The  example mentions a variable savecore in /etc/rc.conf.  This variable is no
longer used--it's enough to set the variable dumpdev.

Page 92
_______

At the end of the section How to install a package add the text:

Alternatively, you  can  install  packages  from  the  /stand/sysinstall  Final
Configuration  Menu.  We saw this menu on page in figure 4-14 on page 71.  When
you start sysinstall from the command line, you get to this menu  by  selecting
Index, and then selecting Configure.


Page 93
_______

Before the heading Install ports from the first CD-ROM add:


Install ports when installing the system
________________________________________

The  file  ports/ports.tgz  on the first CD-ROM is a tar archive containing all
the ports.  You can install it with the base system if you  select  the  Custom
distribution  and  include the ports collection.  If you didn't install them at
the time, use the following method to install them all  (about  40  MB).   Make
sure your CD-ROM is mounted (in this example on /cdrom), and enter:

Page 96
_______

Replace the example at the top of the page with:

Instead, do:

# cd /cd4/ports/distfiles
# mkdir -p /usr/ports/distfiles              make sure you have a distfiles directory
# for i in *; do
>   ln -s /cd4/ports/distfiles/$i /usr/ports/distfiles/$i
> done

Page 6






                    Errata and addenda for the Complete FreeBSD, second edition


If you're using csh or tcsh, enter:

# cd /cd4/ports/distfiles
# mkdir -p /usr/ports/distfiles              make sure you have a distfiles directory
# foreach i (*)
?   ln -s /cd4/ports/distfiles/$i /usr/ports/distfiles/$i
? end

Thanks  to  Christopher  Raven  <gurab@lineone.net> and Francois Jacques <fran-
cois.jacques@callisto.si.usherb.ca> for drawing this to my attention.

Page 128
________

Replace the complete text below the example with the following:

These values are defaults, and many  are  either  incorrect  for  FreeBSD  (for
example the device name /dev/com1) or do not apply at all (for example Xqueue).
If you are configuring manually, select one Protocol and one Device entry  from
the  following  selection.   If  you must use a two-button mouse, uncomment the
keyword Emulate3Buttons--in this mode, pressing both mouse  buttons  simultane-
ously  within Emulate3Timeout milliseconds causes the server to report a middle
button press.

Section "Pointer"

    Protocol   "Microsoft"         for Microsoft protocol mice
    Protocol    "MouseMan"         for Logitech mice
    Protocol    "PS/2"             for a PS/2 mouse
    Protocol    "Busmouse"         for a bus mouse

    Device     "/dev/ttyd0"        for a mouse on the first serial port
    Device     "/dev/ttyd1"        for a mouse on the second serial port
    Device     "/dev/ttyd2"        for a mouse on the third serial port
    Device     "/dev/ttyd3"        for a mouse on the fourth serial port
    Device     "/dev/psm0"         for a PS/2 mouse
    Device     "/dev/mse0"         for a bus mouse

    Emulate3Buttons           only for a two-button mouse

EndSection

You'll notice that the protocol name does not always match  the  manufacturer's
name.   In  particular,  the  Logitech  protocol only applies to older Logitech

                                                                         Page 7






Install ports when installing the system


mice.  The newer ones use either the MouseMan or Microsoft  protocols.   Nearly
all modern serial mice run one of these two protocols, and most run both.

If  you are using a bus mouse or a PS/2 mouse, make sure that the device driver
is included in the kernel.  The GENERIC kernel contains drivers for both  mice,
but the PS/2 driver is disabled.  Use UserConfig (see page 50) to enable it.

Page 140
________

Just before the paragraph The super user add the following paragraph:

If  you  do  manage to lose the root password, all may not be lost.  Reboot the
machine to single user mode (see page 157), and enter:

# mount -u /             mount root file system read/write
# passwd root            change the password for root
Enter new password:
Enter password again:
# ^D                enter ctrl-D to continue with startup

Note that you should explicitly state the name root: in single user  mode,  the
system doesn't have the concept of user IDs.

Page 148
________

Replace the text at the top of the page with:

Modern  shells  supply  command  line editing which resembles the editors vi or
Emacs.  In bash, sh, ksh, and zsh you can make the choice by entering

Page 152
________

After figure 10-8, add the following text:

It  would  be  tedious  for  every  user  to  put  settings  in  their  private
initialization  files, so the shells also read a system-wide default file.  For
the Bourne shell family, it is /etc/profile, while the C shell family has three
files:  /etc/csh.login  to  be executed on login, /etc/csh.cshrc to be executed
when a new shell is started  after  you  log  in,  and  /etc/csh.logout  to  be
executed  when  you  stop  a  shell.   The  start files are executed before the
corresponding individual files.

Page 8






                    Errata and addenda for the Complete FreeBSD, second edition


In  addition,  login  classes  (page  141)  offer  another  method  of  setting
environment variables at a global level.

Changing your shell
___________________

The  FreeBSD  installation  gives root a C shell, csh.  This is the traditional
Berkeley shell, but it has a number of disadvantages: command line  editing  is
very primitive, and the script language is significantly different from that of
the Bourne shell, which is the de facto standard for shell scripts: if you stay
with  the  C  shell,  you  may  still need to understand the Bourne shell.  The
latest version of the Bourne shell sh also includes some command line  editing.
See page 148 for details of how to enable it.

You  can  get  better  command line editing with tcsh, in the Ports Collection.
You can get both better command line editing and Bourne shell syntax with bash,
also in the Ports Collection.

If  you  have root access, you can use vipw to change your shell, but there's a
more general way: use chsh (Change Shell).  Simply run the program.  It  starts
your  favourite editor (as defined by the EDITOR environment variable).  Here's
an example before:

#Changing user database information for velte.
Shell: /bin/csh
Full Name: Jack Velte
Location:
Office Phone:
Home Phone:

You can change anything after the colons.  For example, you might  change  this
to:

#Changing user database information for velte.
Shell: /usr/local/bin/bash
Full Name: Jack Velte
Location: On the road
Office Phone: +1-408-555-1999
Home Phone:

chsh  checks and updates the password files when you save the modifications and
exit the editor.  The next time you log in, you get the new shell.  chsh  tries
to  ensure you don't make any mistakes--for example, it won't let you enter the
name of a shell which isn't mentioned in the file /etc/shells--but it's a  very

                                                                         Page 9






Install ports when installing the system


good  idea  to  check  the shell before logging out.  You can try this with su,
which you normally use to become super user:

bumble# su velte
Password:
su-2.00$                 note the new prompt

There are a couple of problems in using tcsh or bash as a root shell:

o The shell for root must be on the root file system,  otherwise  it  will  not
  work  in single user mode.  Unfortunately, most ports of shells put the shell
  in the directory /usr/local/bin, which is  almost  never  on  the  root  file
  system.

o Most  shells  are  dynamically linked: they rely on library routines in files
  such as /usr/lib/libc.a.  These files are not available in single user  mode,
  so  the shells won't work.  You can solve this problem by creating statically
  linked versions of the shell, but this requires programming experience beyond
  the scope of this book.

If you can get hold of a statically linked version, perform the following steps
to install it:

o Copy the shell to /bin, for example:

  # cp /usr/local/bin/bash /bin

o Add the name of the shell to /etc/shells,  in this example the line  in  bold
  print:

  # List of acceptable shells for chpass(1).
  # Ftpd will not allow users to connect who are not using
  # one of these shells.
  /bin/sh
  /bin/csh
  /bin/bash


You can then change the shell for root as described above.

Thanks  to  Lars Koller  <Lars.Koeller@Uni-Bielefeld.DE> for drawing this to my
attention.



Page 10






                    Errata and addenda for the Complete FreeBSD, second edition


Page 160
________

Replace the text at the fourth bullet with the augmented text:

The second-level boot locates the kernel, by default the file  /kernel  on  the
root file system, and loads it into memory.  It prints the Boot: prompt at this
point so that you can influence this choice--see the man page on page  579  for
more details of what you can enter at this prompt.

Page 176
________

Add the following paragraph

Unmounting file systems

When you mount a file system, the system assumes it is going to stay there, and
in the interests of efficiency it delays writing data back to the file  system.
This  is the same effect we discussed on page 158.  As a result, if you want to
stop using a file system, you need to tell the system about it.   You  do  this
with  the umount command.  Note the spelling--there's no n in the command name.

You need to do this even with read-only  media  such  as  CD-ROMs:  the  system
assumes  it  can  access the data from a mounted file system, and it gets quite
unhappy if it can't.  Where possible, it locks  removable  media  so  that  you
can't remove them from the device until you unmount them.

Using  umount  is  straightforward:  just  tell  it what to unmount, either the
device name or the directory name.  For  example,  to  unmount  the  CD-ROM  we
mounted in the example above, you could enter one of these commands:

# umount /dev/cd1a
# umount /cd1

Before  unmounting  a  file  system, umount checks that nobody is using it.  If
somebody is using it, it will refuse to unmount it with a message like  umount:
/cd1:  Device  busy.   This  message often occurs because you have changed your
directory to a directory on the file system you want to  remove.   For  example
(which also shows the usefulness of having directory names in the prompt):





                                                                        Page 11






Install ports when installing the system


=== root@freebie (/dev/ttyp2) /cd1 16 -> umount /cd1
umount: /cd1: Device busy
=== root@freebie (/dev/ttyp2) /cd1 17 -> cd
=== root@freebie (/dev/ttyp2) ~ 18 -> umount /cd1
=== root@freebie (/dev/ttyp2) ~ 19 ->

Thanks to Ken Deboy <glockr@locked_and_loaded.reno.nv.us> for pointing out this
omission.

Page 197, first line
____________________

The text of the first full sentence reads:

The first name, up the the  symbol, is the label.

In fact, it should read:

The first name, up to the | symbol, is the label.


Page 208, middle of page
________________________

The example shows the file name /dev/rst0 when  using  the  Bourne  shell,  and
/dev/nrst0  when  using  C  shell  and  friends.   This  is  inconsistent;  use
/dev/nrst0 with any shell if you want a non-rewinding tape, or /dev/rst0 if you
want a rewinding tape.

Thanks to Norman C Rice <nrice@emu.sourcee.com> for pointing out this one.

Page 219
________

Before the section Testing the spooler add the following section:

Starting the spooler
____________________

As  we  saw  above,  the  line  printer  daemon lpd is responsible for printing
spooled jobs.  If you're root, you can start it by name:




Page 12






                    Errata and addenda for the Complete FreeBSD, second edition


# lpd

Normally, however, you will want it to be started automatically when the system
starts up.  You do this by setting the variable lpd_enable in /etc/rc.conf:

lpd_enable="YES"              # Run the line printer daemon

See page 1609 for more details of /etc/rc.conf.

Thanks  to  Tommy  G.  James  <tgj@worldnet.att.net>  for  bringing  this to my
attention.


Page 231
________

Replace the first line of the example with:

xhost presto bumble gw

The original version allowed anybody on the Internet to access your system.

Thanks  to  Jerry  Dunham  <dunham@dunham.org>  for  drawing  this  one  to  my
attention.


Page 237
________

In the section Installing the sample desktop, replace the first paragraph with:

You'll find all the files  described  in  this  chapter  on  the  first  CD-ROM
(Installation CD-ROM) in the directory /book.  Remember that you must mount the
CD-ROM before you can access the files--see page 175 for further details.   The
individual scripts are in the directory /book/scripts, but you'll probably find
it easier to install them with the script install-desktop:

Thanks to Chris Kaiser <kaiserc@fltg.net> for drawing this to my attention.

Page 242
________

The instructions for extracting the source files from CD-ROM in the  middle  of
page  242 are incorrect.  You'll find the kernel sources on the first CD-ROM in

                                                                        Page 13






Starting the spooler


the directory /src.  Replace the example with:

# mkdir -p /usr/src/sys
# ln -s /usr/src/sys /sys
# cd /
# cat /cdrom/src/ssys.[a-d]* | tar xzvf -

Thanks   to   Raymond   Noel    <raynoel@videotron.ca>,    Suttipan    Limanond
<b0l6604@unix.tamu.edu> and Satwant <wizkid11@xnet.com> for finding this one in
several small slices.

Page 257
________

Replace the paragraph Berkeley Packet Filter with:


pseudo-device bpfilter
______________________

The Berkeley Packet Filter (bpf) allows  you  to  capture  packets  crossing  a
network  interface  to  disk or to examine them with the tcpdump program.  Note
that this capability represents a significant compromise of  network  security.
The  number  after  bpfilter is the number of concurrent processes that can use
the facility.  Not all network interfaces support bpf.

In order to use the Berkeley Packet Filter, you must  also  create  the  device
nodes  /dev/bpf0 to /dev/bpf3 (if you're using the default number 4).  Current-
ly, MAKEDEV doesn't help much--you need to create each device separately:

# cd /dev
# ./MAKEDEV bpf0
# ./MAKEDEV bpf1
# ./MAKEDEV bpf2
# ./MAKEDEV bpf3

Thanks to Christopher Raven <c.raven@ukonline.co.uk> for  drawing  this  to  my
attention.

Page 264
________

In the list of disk driver flags, add:


Page 14






                    Errata and addenda for the Complete FreeBSD, second edition


o Bit  12 (0x1000) enables LBA (logical block addressing mode).  If this bit is
  not set, the driver accesses the disk in CHS (cylinder/head/sector) mode.

o In CHS mode, if bits 11 to 8 are not equal to 0, they specify the  number  of
  heads  to  assume  (between 1 and 15).  The driver recalculates the number of
  cylinders to make up the total size of the disk.


Page 283, ``Creating the source tree''
______________________________________

Add a third point to what you need to know:

3. Possibly, the date of the last update that you want to be  included  in  the
  checkout.   If  you  specify  this date, cvs ignores any more recent updates.
  This option is often useful when somebody discovers a recently introduced bug
  in  -CURRENT:  you  check  out  the  modules  as they were before the bug was
  introduced.  You specify the date with the -D  option,  for  example  -D  "10
  December 1997".


Page 285, after the second example.
___________________________________

Add the text:

If  you  need  to check out an older version, for example if there are problems
with the most recent version of -CURRENT, you could enter:

# cvs co  -D "10 December 1997" src/sys

This command checks out the kernel sources as of 10 December 1997.

Page 294
________

Add the following section:

Problems executing Linux binaries
_________________________________

One of the problems with the ELF format used by more recent Linux  binaries  is
that  they  usually  contain no information to identify them as Linux binaries.
They might equally well be BSD/OS or UnixWare binaries.  That's  not  really  a

                                                                        Page 15






Starting the spooler


problem at this point, since the only ELF format that FreeBSD 2.2.7 understands
is Linux, but FreeBSD-CURRENT recognizes a native FreeBSD ELF format  as  well,
and  of  course  that's  the default.  If you want to run a Linux ELF binary on
such a system, you must brand the executable using the program  brandelf.   For
example, to brand the StarOffice program swriter3, you would enter:

# brandelf -t linux /usr/local/StarOffice-3.1/linux-x86/bin/swriter3

Thanks to Dan Busarow <dan@dpcsys.com> for bringing this to my attention.

Page 364, middle of page
________________________

Change the text from:

The names MYADDR and HISADDR are keywords which represent the addresses at each
end of the link.  They must be written as shown, though they may  be  in  lower
case.

to

The names MYADDR and HISADDR are keywords which represent the addresses at each
end of the link.  They must be written as shown, though newer versions  of  ppp
allow you to write them in lower case.

Thanks to Mark S. Reichman <mark@fang.cs.sunyit.edu> for this correction.

Page 368
________

Replace the paragraph after the second example with:

In  FreeBSD  version  3.0  and  later,  specify  the  options  PPP_BSDCOMP  and
PPP_DEFLATE to enable two kinds of compression.  You'll also  need  to  specify
the corresponding option in Kernel PPP's configuration file.  These options are
not available in FreeBSD version 2.

Thanks to Brian Somers <brian@Awfulhak.org> for this information.

Page 397
________

In the section ``Nicknames'', the example should read:


Page 16






                    Errata and addenda for the Complete FreeBSD, second edition


www       IN   CNAME          freebie
ftp       IN   CNAME          presto

In other words, there should be a space between CNAME and the system name.

Page 422
________

Replace the text above the example with:

tcpdump is a program which monitors a network interface and  displays  selected
information which passes through it.  It uses the Berkeley Packet Filter (bpf),
an optional component of the kernel.  It is not included in the GENERIC kernel:
see page 257 for information on how to configure it.

If you don't configure the Berkeley Packet Filter, you will get a message like

tcpdump: /dev/bpf0:  device not configured

If you forget to create the devices for bpf, you will get a message like:

tcpdump: /dev/bpf0: No such file or directory

Since  tcpdump poses a potential security problem, you must be root in order to
run it.  The simplest way to run it is without any parameters.  This will cause
tcpdump  to  monitor  and  display  all  traffic  on  the  first active network
interface, normally Ethernet:

Thanks to Christopher Raven <c.raven@ukonline.co.uk> for  drawing  this  to  my
attention.

Page 423
________

The  description  at  the  top of the page incorrectly uses the term IP address
instead  of  Ethernet  address.   In  addition,  a  page  number  reference  is
incorrect.  Replace the paragraph with:

o Line  1  shows  an  ARP  request:  system  presto is looking for the Ethernet
  address of wait.  It would appear that  wait  is  currently  not  responding,
  since there is no reply.

o Line 2 is not an IP message at all.  tcpdump shows the Ethernet addresses and
  the beginning of the packet.  We don't consider this kind of request in  this

                                                                        Page 17






Starting the spooler


  book.

o Line 3 is a broadcast ntp message.  We looked at ntp on page 160.

o Line 4 is another attempt by presto to find the IP address of wait.

o Line  5  is  a  broadcast  message  from  bumble  on  the  rwho  port, giving
  information about its current load averages and how long it has been up.  See
  the man page for rwho on page 1167 for more information.

o Line 6 is from a TCP connection between port 6000 on freebie and port 1089 on
  presto.  It is sending 384 bytes (with  the  sequence  numbers  536925467  to
  536925851; see page 305), and is acknowledging that the last byte it received
  from presto had the sequence number 325114346.  The window size is 17280.

o Line 7 is another ARP request.  presto is looking for the Ethernet address of
  freebie.   How  can  that  happen?   We've  just  seen  that  they have a TCP
  connection.  In fact, ARP information expires after 20 minutes.   It's  quite
  possible  that  all  connections between presto and freebie have been dormant
  for this period, so presto needs to find freebie's IP address again.

o Line 8 is the ARP reply from freebie to presto giving its Ethernet address.

o Line 9 shows a reply from presto on the connection to freebie that we saw  on
  line  6.   It  acknowledges  the  data  up  to sequence number 536925851, but
  doesn't send any itself.

o Line 10 shows  another  448  bytes  of  data  from  freebie  to  presto,  and
  acknowledging the same sequence number from presto as in line 6.

Thanks to Sergei S. Laskavy <laskavy@hedgehog.cs.msu.su> for drawing this to my
attention.

Page 466, before the ps example
_______________________________

Add another bullet:

o Finally, you may find it convenient to let some other system handle all  your
  mail  delivery  for  you: you just send anything you can't deliver locally to
  this other host, which sendmail calls a smart  host.   This  is  particularly
  convenient if you send your mail with UUCP.

  To  tell  sendmail  to use a smart host (in our case, mail.example.net), find

Page 18






                    Errata and addenda for the Complete FreeBSD, second edition


  the following line in sendmail.cf:

  # "Smart" relay host (may be null)
  DS

  Change it to:

  # "Smart" relay host (may be null)
  DSmail.example.net


Page 478, ``Running Apache''
____________________________

The text describes the location of the server  as  /usr/local/www/server/httpd.
This  appears to depend on where you get the port from.  Some people report the
file being at the more likely location /usr/local/sbin/httpd (though  note  the
directory  sbin,  not  bin).   Check  both  locations  if you run into trouble.
Thanks to Sue Blake <sue@welearn.com.au> for this information.

Page 492
________

Replace references to nmdb with nmbd.

Page 493
________

Replace the last paragraph on the page with:

socket options  is  hardly  mentioned  in  the  documentation,  but  it's  very
important:  many  Microsoft  implementations  of  TCP/IP  are  inefficient  and
establish a new TCP more often  than  necessary.   Select  the  socket  options
TCP_NODELAY  and  IPTOS_LOWDELAY,  which can speed up the response time of such
applications by over 95%.

Page 1620
_________

The description of /etc/hosts.lpd erroneously refers to the file /etc/ftpusers.
This should be /etc/hosts.lpd, of course.

Thanks  to  Anders  Andersson  <anders@sanyusan.se>  for  drawing  this  to  my
attention.

                                                                        Page 19




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