Perl for Web Site Management

Index

Symbols

! (exclamation point)

logical not operator, Guestbook Preliminaries

!= (numeric inequality) operator, if Statements

#! (shebang line), Creating the “Hello, world!” Script

$ (dollar sign)

end-of-string anchor in regular expressions, Regular Expressions, The Search Pattern

scalar variables, Scalar Variables

$_ (default variable), Using the Default Variable $_, Using the Default Variable $_

disabling HTML tags, Guestbook Preliminaries

finding HTML files, Finding HTML Files Only

operator and, Converting IP Addresses

processing search results, Running SWISH-E via a CGI Script

% (percent sign)

hash variables and, Hash Variables

indicates formatting codes, The &new_visit and &add_to_visit Subroutines

modulus operator, The &new_visit and &add_to_visit Subroutines

() (parentheses)

grouping logical elements, if Statements

grouping metacharacter in regular expressions, The Search Pattern

using capturing parentheses, Thinking Like a Computer, Alternation, The Mammoth Regular Expression, Taint Mode, Running SWISH-E via a CGI Script, Using Templates

(diamond operator)

in clf_lookup.plx script, Converting IP Addresses

in log_report.plx script, The Log-Analysis Script

(spaceship operator)

numeric comparison, Fancier Sorting

(|) (pipe character)

alternation metacharacter in regular expressions, The Search Pattern, Alternation, Alternation

backslashed in regular expressions, Generating the Alphabetical Index

* (asterisk)

quantifier metacharacter in regular expressions, The Search Pattern, Bumping Along and Backtracking ...