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Index: R

-r operator : The -x File Tests
-R operator : The -x File Tests
rand( ) operator : Exercises
- example of : Arrays and List Data
random access
- to password file : Getting Password and Group Information
- with seek( ) operator : Fixed-Length Random Access Databases
ranges, character, in regular expressions : Single-Character Patterns
read( ) operator : Fixed-Length Random Access Databases
readdir( ) operator : Reading a Directory Handle
reading
- from a command : Using Processes as Filehandles
- from a file : Using Filehandles
- from standard input : Input from STDIN
readlink( ) operator : Creating Hard and Soft Links with Perl
- example of : File and Directory Manipulation
redo operator : The redo Statement
references in CGI programs : References
regular expressions : Handling Varying Input Formats
- alternation in : Alternation
- anchoring in : Anchoring Patterns
- backtracking in : Multipliers
- character classes in : Single-Character Patterns
- compared with globbing : Globbing
- definition of : Concepts About Regular Expressions
- example of
- grouping patterns of : Grouping Patterns
- non-special characters of : Single-Character Patterns
- precedence in : Precedence
- split( ) and : The split Function
- variable interpolation and : Using Variable Interpolation
removing
- characters : Transliteration
- files : Removing a File
- last character : The chop and chomp Functions
rename( ) operator
- Making Those Old Word Lists More Noticeable
- Renaming a File
- example of
- - File and Directory Manipulation
  - The Final Programs
renaming files : Renaming a File
- examples of : Making Those Old Word Lists More Noticeable
reports, generating
- Listing the Secret Words
- What Is a Format?
result : Scalar Operators
return status, backwards for system( ) : Using system and exec
return values
- from fork : Using fork
- introduced : Making It a Bit More Modular
- print( ) and : Using print for Normal Output
- read( ) : Fixed-Length Random Access Databases
- select( ) : Using select( ) to Change the Filehandle
- subroutine, example of : The Final Programs
- subroutines : Return Values
- tr operator : Transliteration
reverse( ) operator : The reverse Function
- example of
- - Arrays and List Data
  - Basic I/O
right angle brackets (\>), as format field characters : Text Fields
right associativity : Operator Precedence and Associativity
rindex( ) operator : Finding a Substring
- example of : Other Data Transformation
rm command, and unlink( ) : Removing a File
rmdir( ) operator : Making and Removing Directories

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