Errata

http://www.oreilly.com/catalog/lperl4/

NOW READS:
http://www.oreilly.com/catalog/9780596101053/

It's a retronym, not an acronym....
should be:
It's a backronym, not an acronym

"That's not to say that this section is in difficult to understand."
^^
NOW READS:
"That's not to say that this section is difficult to understand."

"If the person running the program types three lines and presses the proper keys
needed to indicate end-of-file, the array will have with three elements."

NOW READS:
"If the person running the program types three lines and presses the proper keys
needed to indicate end-of-file, the array will have three elements."

Now, before we go any further, we must be clear about something: this shortcut
workparticular, as a statement all on its own) it won't...

NOW READS:
Now, before we go any further, we must be very clear about something:
this shortcut works only if you write it just as we did. If you put
a line-input operator anywhere else (in particular, as a statement all
on its own) it won't...

If the invocation arguments had been fred- betty, that
->
If the invocation arguments had been fred - betty, that

#######################################

we could easily see see which ones

should read instead

we could easily see which ones

there should not be a space between teh text "/fred w+" and "barney". this may have been a formatting error as the result of the regular experssion being spanned across two lines.

Change the line

See Appendix Q for answers to the following exercises:

it should read as

See Appendix A for answers to the following exercises:

the memory of an completed pattern match.
->
the memory of a completed pattern match.

#######################################

A period is missing at the end of the first footnote.

Change:

"which is practically everywhere"

to:

"which is practically everywhere."

The line reads

print "Found 'wilma' at start of line
" if /^wilma/im;

Unfortunately, such "expression modifiers" are not explained until page 137. The first time that
we see an expression modifier explained is on page 137, line 3.

So the user has no idea on page 129 what such an expression means (although, admittedly, it is
easy to guess the meaning).

Note from the Author or Editor:
If you are reading the old edition, change that to

if( ... ) { ... }

The phrase "this is as more efficient" does not make sense. Change this phrase to, for instance,
"this is efficient".

Note from the Author or Editor:
Change to "this is more efficient", without the "as".

If we wanted all the non-dot files and we could say that...
->
If we wanted all the non-dot files, then we could say that...

#######################################

change the phrase:

because it's primary purpose

to be instead:

because its primary purpose

Change the phrase:

"but don't try show the contents."

to read instead:

"but don't try to show the contents."

$personal_name{$a} cmp $family_name{$b} or
->
$personal_name{$a} cmp $personal_name{$b} or

#######################################

Change the phrase

"See Appendix 1 for answers to the following exercises:"

to be instead

"See Appendix A for answers to the following exercises:"

The last sentence in the paragraph beginning "Well, that worked for Unix" reads "In that case, you'd have that machine's kind of filename string in $name, in that case." I think that you only want "in that case" once.

Exercise 2: Get a list of filenames in the current directory. Use the C<Cwd>
module... then use the C<File::Spec> module...

Exercise 3: Using the output... ... use the C<File::Basename> module.

The strange formatting characters "C<>" HAVE BEEN DELETED.

"Print the list of paths to standard outout with one path per line."

'outout' NOW READS 'output'

Change the phrase

"See Appendix Q"

to be instead

"See Appendix A"

Since there is more than one exercise, please change the phrase

"to the following exercise:"

to be instead

"to the following exercises:"

Appendix 1: Exercise Answers
->
Appendix A: Exercise Answers

#######################################

Page 230,5th line from the top;
"Here's one way to do it:" NOW READS "2. Here's one way to do it:".

(exercise 2 answer, first line)
"2. Here's one way to do it:" NOW READS "3. Here's one way to do it:".

Page 231:(first line of page)
"Here's one way to do it:" NOW READS "4. Here's one way to do it:".

(exercise 3 answer, first line)
"3. Here's one way to do it:" NOW READS "5. Here's one way to do it:".

"Here's one way to do it" NOW READS "3. Here's one way to do it".

Here's one way...
->
3. Here's one way...

#######################################

"Here's one way to do it:"

NOW READS:
"2. Here's one way to do it:"

and the rest of the exercise answers HAVE BEEN RENUMBERED so that 2 is really 3, 3 is really 4, and
4 is really 5.

The website in the footnote is wrong. Change

http://www.cpan.org/doc/FMTEYEWTK/random

to be instead

http://www.perl.com/doc/FMTEYEWTK/random

Note from the Author or Editor:
Change as noted

Change the phrase

"in this case with last)."

to

"in this case with last.)"

In other words, the period and the parenthesis should be reversed.

if you were wanted to obfuscate your code..."
->
if you wanted to obfuscate your code...

#######################################

The solutions to these exercises previously contained references to modules and Perl code all within "C<" and ">"
formatting characters.

Those formatting characters HAVE BEEN REMOVED.

Change the heading for Chapter 15 exercises from

"Answer to Chapter 15 Exercise"

to

"Answer to Chapter 15 Exercises"

(i.e., the word "exercise" should be plural.)

Change

"details later.)"

to

"details later)."

In other words, the parenthesis and the period are in the wrong order. The period should be outside the parenthesis, because the period is ending the outside sentence "This answer uses a hash reference"