On page 5, the examples which read
eval "/usr/bin/perlshould read
eval "exec /usr/bin/perl
On page 195, the equivalent to the System V sum program only works for very small files. To do larger files, use
undef $/;
$checksum = unpack("%32C*",<>) % 32767;
The descriptions of alarm and sleep refer to signal SIGALARM. These should refer to SIGALRM.
The -0 switch to set the initial value of $/ was added to Perl after the book went to press.
The -l switch now does automatic line ending processing.
The qx// construct is now a synonym for backticks.
$0 may now be assigned to set the argument displayed by ps (1).
The new @###.## format was omitted accidentally from the description on formats.
It wasn't known at press time that s///ee caused multiple evaluations of the replacement expression. This is to be construed as a feature.
(LIST) x $count now does array replication.
There is now no limit on the number of parentheses in a regular expression.
In double-quote context, more escapes are supported: \e, \a, \x1b, \c[, \l, \L, \u, \U, \E. The latter five control up/lower case translation.
The $/ variable may now be set to a multi-character delimiter.
There is now a g modifier on ordinary pattern matching that causes it to iterate through a string finding multiple matches.
All of the $^X variables are new except for $^T.
The default top-of-form format for FILEHANDLE is now FILEHANDLE_TOP rather than top.
The eval {} and sort {} constructs were added in version 4.018.
The v and V (little-endian) template options for pack and unpack were added in 4.019.