Errata

The -l option doesn't exist.
It should be -n (using Suse 7.1)

Type 'A' for the -t option doesn't exist. The type should be an lowercase 'a'.

Type 'O' for the -t option doesn't exist. The type should be an lowercase 'o'.

AFAIK 'y' isn't a valid flag for the 's'-command. 'y' is a command.

Is the '+' necessary?

Wouldn't grep -E '[0-9]' file achieve the requested result?

Text reads: "If omitted, device dafaults to /dev/hda."

fdisk v. 2.11f (on my Slackware boxes) does not default to a particular partition.
In the absence of a device parameter, a 'usage' message is displayed.

The type of filesystem is displayed in hexadecimal not octal.

<snip>
Turn on user quotas only on the /home filesystem:

# quotaon -gv /home
/dev/sda9: group quotas turned on
</snip>

should be "Turn on group quotas..." to agree with command input and output.

Figure 1-3 denotes Hard and Symbolic Links. This is correct, except the text
referencing Figure 1-3 on page 108 reads:

Figure 1-3 shows how to total big values into the octal equivalent

explaining the options :

-s Create a symbolic ... : this is NOT the default

default ln creates hard link; -s creates symbolic link

In my RedHat box 7.x, the command:

original:
$stat my*

will result an inode 41 for the file "myslink"

correct:
$stat -l my*

will result an inode stated 30 for the file "myslink"

At least Redhat does not delete files under /tmp upon system boot.

Figure 1-5 doesn't seem to be the right picture as described in the text.
Picture shows a man page instead of the partitioning sheme.

In the previous pages, the boot process, minor system admin and now the
configuration of shells is discussed.
It would be appropriate to briefly explain how the the shell is started and
which config files are read.
Starting with the init process, the shell is defined in the password file
and what happens next ?

"syslog must be ..."
I would add "by sending KILL_HUP : ps ..."

-N "$now" shoud be -N "$prev_full", otherwise we end up storing only files modified
after we start this script

On Page 220, Q.41 ask the command to initiate a change to runlevel 5, the
answer found on Page 226 says "init 1", I do believe it is "init 5".

The book reads "Single-user mode can be entered with the single, or simply 1,
parameter at the LILO prompt". But single(or s) and 1 are a little bit different.
Bootflag 1 executs scripts under rc1.d, whereas bootflag single does not. It is
written in init(8).

The cat-command is used but is not clarified.

The book reads "The bzImage file is ..., compressed using the bzip2 utility". But
according to the file commands.txt under the kernel documentation sub directory
kbuld(ex. /usr/src/linux-2.4/Documentation/kbuild/commands.txt),
"Both files use gzip compression.
The 'bz' in 'bzImage' stands for 'big zImage', not for 'bzip'!".

In example 2-6, the "system-wide .bashrc" file should be "bashrc" in two places.
Example 2-7 also confuses the bashrc and .bashrc filenames.

The first paragraph, second sentence vaguely states "...child shell executes the
appropriate files (such as the .bash_profile)", but table 2-16 on page 346 indicates
that the .bash_profile is run only at login.

In figure 2-7, the network address expressed in binary should be:
11000000.10101000.00000001.00000000

With the incorrect binary as shown, the network address would be 192.171.1.0.
Unfortunately, I think that the figure might be wrong because the explanation for
ANDing is incorrect. All positions that have a 1 in both the IP address and the
subnet mask become a 1 after ANDing. Everything else becomes a 0.

The sentence is vague, stating "Most of these commands...", but I have only seen
the ifconfig and route commands in startup scripts.

The filenames of the local configuration files should be /etc/hosts.deny and
/etc/hosts.allow; not /etc/host.deny and /etc/host.allow as mentioned in the book.

According to the rdev manpage the -s option hasn't been available since Linux 0.95. This answer, and the
question it answers are both completely bogus.