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Index: S
/s pattern-matching modifier
:
6.0. Introduction
matching multiple lines :
6.6. Matching Multiple Lines
\s substitution modifier
:
1.11. Indenting Here Documents
s/// operator
~ operator with :
1.1. Accessing Substrings
stripping whitespace with :
1.11. Indenting Here Documents
sascii program (example)
:
15.6. Reading from the Keyboard
save_parameters( )
:
19.13. Saving a Form to a File or Mail Pipe
scalars
:
1.0. Introduction
arrays of scalar references :
11.6. Creating Arrays of Scalar References
detecting scalar context :
10.6. Detecting Return Context
exchanging values between :
1.3. Exchanging Values Without Using Temporary Variables
references to :
11.5. Taking References to Scalars
schemes (URLs)
:
19.0. Introduction
Schwartz, Randal
:
4.15. Sorting a List by Computable Field
scope of subroutine variables
:
10.2. Making Variables Private to a Function
screen
: (see
user interfaces
)
scripts, CGI
: (see
CGI programming
)
SDBM library
:
14.0. Introduction
searching for patterns
: (see
pattern matching
;
regular expressions
)
seconds
: (see
date and time
)
security
CGI scripts
19.0. Introduction
19.4. Writing a Safe CGI Program
executing user commands :
19.6. Executing Commands Without Shell Escapes
connecting through firewalls :
17.18. Program: fwdport
reading passwords without echo :
15.10. Reading Passwords
testing files for trustworthiness :
8.17. Testing a File for Trustworthiness
seek( )
8.0. Introduction
8.5. Trailing a Growing File
seekdir( )
:
9.5. Processing All Files in a Directory
seeme program (example)
:
7.12. Flushing Output
select( )
3.10. Short Sleeps
17.3. Communicating over TCP
changing STDOUT :
7.0. Introduction
reading from multiple filehandles
7.13. Reading from Many Filehandles Without Blocking
17.3. Communicating over TCP
self-referential data structures
:
13.13. Coping with Circular Data Structures
SelfLoader module
:
12.9. Speeding Module Loading with SelfLoader
separators, menu
:
15.14. Creating Menus with Tk
servers
daemon servers :
17.15. Making a Daemon Server
forking :
17.11. Forking Servers
multi-homed :
17.14. Writing a Multi-Homed Server
non-forking :
17.13. Non-Forking Servers
POP3 :
18.5. Reading Mail with POP3
pre-forking :
17.12. Pre-Forking Servers
restarting on demand :
17.16. Restarting a Server on Demand
TCP :
17.2. Writing a TCP Server
UDP :
17.5. Setting Up a UDP Server
set theory
:
4.7. Finding Elements in One Array but Not Another
setsockopt( )
:
17.13. Non-Forking Servers
setting up
: (see
initializing
)
shallow copies
:
11.12. Copying Data Structures
shared locks
:
7.11. Locking a File
sharetest program (example)
:
16.12. Sharing Variables in Different Processes
sharing variables among processes
:
16.12. Sharing Variables in Different Processes
shell escapes, executing commands without
:
19.6. Executing Commands Without Shell Escapes
shell wildcards for regexp matching
:
6.9. Matching Shell Globs as Regular Expressions
shift( )
circular lists :
4.16. Implementing a Circular List
on multiple array elements :
4.11. Processing Multiple Elements of an Array
Tie::IxHash module and :
5.6. Retrieving from a Hash in Insertion Order
shopping cart
:
19.12. Writing a Multiscreen CGI Script
shuffling
(see also
random
)
8.7. Randomizing All Lines
array elements :
4.17. Randomizing an Array
file line order :
8.7. Randomizing All Lines
shutdown( )
:
17.9. Closing a Socket After Forking
%SIG hash
:
16.15. Installing a Signal Handler
SIGALRM signal
16.0. Introduction
16.21. Timing Out an Operation
SIGCHLD signal
16.0. Introduction
16.19. Avoiding Zombie Processes
SIGHUP signal
16.0. Introduction
17.16. Restarting a Server on Demand
SIGINT signal
16.0. Introduction
16.18. Catching Ctrl-C
signals
:
16.0. Introduction
blocking :
16.20. Blocking Signals
handlers for :
16.15. Installing a Signal Handler
listing available :
16.13. Listing Available Signals
process groups
7.22. Program: lockarea
16.14. Sending a Signal
sending :
16.14. Sending a Signal
signatures, randomized
:
16.22. Program: sigrand
SIGPIPE signal
16.0. Introduction
16.4. Reading or Writing to Another Program
sigprocmask system call
:
16.20. Blocking Signals
SIGQUIT signal
:
16.0. Introduction
sigrand program (example)
:
16.22. Program: sigrand
SIGTERM signal
:
16.0. Introduction
SIGUSR1, SIGUSR2 signals
:
16.0. Introduction
sin( )
:
2.12. Calculating More Trigonometric Functions
single inheritance
:
13.0. Introduction
single quotes (')
:
1.0. Introduction
q( ) :
4.1. Specifying a List In Your Program
size
arrays, changing :
4.3. Changing Array Size
hashes, preallocating for :
5.13. Presizing a Hash
Tk window resize events :
15.16. Responding to Tk Resize Events
window/terminal, determining :
15.4. Determining Terminal or Window Size
sleeps
:
3.10. Short Sleeps
slowcat program (example)
:
1.5. Processing a String One Character at a Time
SOCK_ constants
:
17.0. Introduction
sockaddr_in( )
17.0. Introduction
17.4. Setting Up a UDP Client
sockaddr_un( )
:
17.0. Introduction
socket( )
:
17.0. Introduction
sockets
:
17.0. Introduction
bidirectional clients :
17.10. Writing Bidirectional Clients
closing after forking :
17.9. Closing a Socket After Forking
connecting through firewalls :
17.18. Program: fwdport
daemon servers :
17.15. Making a Daemon Server
finding own name/address :
17.8. Finding Your Own Name and Address
forking servers :
17.11. Forking Servers
identifying machine at end :
17.7. Identifying the Other End of a Socket
logging port connection attempts :
17.17. Program: backsniff
multi-homed servers :
17.14. Writing a Multi-Homed Server
non-blocking :
17.2. Writing a TCP Server
non-forking servers :
17.13. Non-Forking Servers
pre-forking servers :
17.12. Pre-Forking Servers
restarting servers on demand :
17.16. Restarting a Server on Demand
TCP protocol
communicating over :
17.3. Communicating over TCP
writing clients :
17.1. Writing a TCP Client
writing servers :
17.2. Writing a TCP Server
UDP protocol
writing clients :
17.4. Setting Up a UDP Client
writing servers :
17.5. Setting Up a UDP Server
Unix domain
17.0. Introduction
17.6. Using UNIX Domain Sockets
soft links
: (see
symbolic links
)
sort( )
4.14. Sorting an Array Numerically
5.9. Sorting a Hash
sortdemo program (example)
:
14.6. Sorting Large DBM Files
sorting
array elements :
4.14. Sorting an Array Numerically
DBM files :
14.6. Sorting Large DBM Files
directory contents
9.0. Introduction
9.12. Program: lst
du command output :
5.16. Program: dutree
hash elements :
5.9. Sorting a Hash
mail (example subroutine) :
10.17. Program: Sorting Your Mail
pod =head1 sections :
15.19. Program: tkshufflepod
randomizing array element order :
4.17. Randomizing an Array
randomizing file line order :
8.7. Randomizing All Lines
text into columns :
4.18. Program: words
Soundex matching
:
1.16. Soundex Matching
spaces
: (see
whitespace
)
specific classes
:
13.0. Introduction
spider (robot)
:
20.11. Creating a Robot
splice( )
:
4.11. Processing Multiple Elements of an Array
Tie::IxHash module and :
5.6. Retrieving from a Hash in Insertion Order
split( )
1.5. Processing a String One Character at a Time
8.3. Processing Every Word in a File
8.9. Processing Variable-Length Text Fields
reading records with pattern separators :
6.7. Reading Records with a Pattern Separator
sprintf( )
%c format :
1.4. Converting Between ASCII Characters and Values
comparing floating-point numbers :
2.2. Comparing Floating-Point Numbers
rounding floating-point numbers :
2.3. Rounding Floating-Point Numbers
SQL database
:
20.9. Creating HTML Templates
SQL queries
14.10. Executing an SQL Command Using DBI and DBD
19.7. Formatting Lists and Tables with HTML Shortcuts
srand( )
:
2.8. Generating Different Random Numbers
stale hyperlinks, finding
:
20.7. Finding Stale Links
standard filehandles
:
7.0. Introduction
stat( )
8.17. Testing a File for Trustworthiness
9.0. Introduction
9.1. Getting and Setting Timestamps
static data members
13.0. Introduction
13.4. Managing Class Data
static scoping
:
10.13. Saving Global Values
STDERR filehandle
:
7.0. Introduction
controlling for other programs :
16.9. Controlling the Input, Output, and Error of Another Program
reading from programs :
16.7. Reading STDERR from a Program
STDIN filehandle
:
7.0. Introduction
preprocessing input :
16.6. Preprocessing Input
testing for interactivity :
15.2. Testing Whether a Program Is Running Interactively
stdio library
:
7.0. Introduction
STDOUT filehandle
:
7.0. Introduction
filtering output :
16.5. Filtering Your Own Output
testing for interactivity :
15.2. Testing Whether a Program Is Running Interactively
sticky widgets
:
19.11. Creating Sticky Widgets
stingy matching
: (see
non-greedy pattern matching
)
Storable module
:
11.12. Copying Data Structures
STORE( )
:
13.15. Creating Magic Variables with tie
store( ) (Storable module)
:
11.13. Storing Data Structures to Disk
stream sockets
17.0. Introduction
17.11. Forking Servers
strftime( )
:
3.8. Printing a Date
String::Approx module
:
6.13. Approximate Matching
strings
(see also
variables
)
1.0. Introduction
1.8. Expanding Variables in User Input
accessing substrings :
1.1. Accessing Substrings
checking if valid numbers :
2.1. Checking Whether a String Is a Valid Number
converting ASCII and values :
1.4. Converting Between ASCII Characters and Values
converting ASCII to/from HTML :
20.4. Converting ASCII to HTML
converting case :
1.9. Controlling Case
copying and substituting :
6.1. Copying and Substituting Simultaneously
default values for :
1.2. Establishing a Default Value
duplicate words, finding :
6.16. Detecting Duplicate Words
escaping characters :
1.13. Escaping Characters
hash element indices :
5.0. Introduction
HTML text substitutions :
20.14. Program: htmlsub
interpolating functions/expression within :
1.10. Interpolating Functions and Expressions Within Strings
matching letters :
6.2. Matching Letters
matching words :
6.3. Matching Words
numeric operators with :
13.14. Overloading Operators
parsing datetime information in :
3.7. Parsing Dates and Times from Strings
plurals based on numbers :
2.18. Printing Correct Plurals
processing characters individually :
1.5. Processing a String One Character at a Time
psgrep program (example) :
1.18. Program: psgrep
reading from binary files :
8.14. Reading a String from a Binary File
reformatting paragraphs :
1.12. Reformatting Paragraphs
removing leading/trailing spaces :
1.14. Trimming Blanks from the Ends of a String
removing/extracting HTML tags :
20.6. Extracting or Removing HTML Tags
reversing elements of :
1.6. Reversing a String by Word or Character
substituting specific words :
1.17. Program: fixstyle
text color, changing :
15.5. Changing Text Color
strings program (example)
:
8.14. Reading a String from a Binary File
stripping whitespace
:
1.14. Trimming Blanks from the Ends of a String
StrNum class (example)
:
13.14. Overloading Operators
struct( ) (Class::Struct)
:
13.5. Using Classes as Structs
struct_flock( ) (lockarea)
:
7.22. Program: lockarea
structs, classes as
:
13.5. Using Classes as Structs
sub keyword
:
10.0. Introduction
subclasses
:
13.0. Introduction
determining membership :
13.8. Determining Subclass Membership
inheritance and :
13.12. Solving the Data Inheritance Problem
subject, sorting mail by (example)
:
10.17. Program: Sorting Your Mail
submitting HTML forms
:
20.2. Automating Form Submission
subroutines
:
10.0. Introduction
access arguments of :
10.1. Accessing Subroutine Arguments
built-in, overriding :
12.11. Overriding Built-In Functions
currently running, name of :
10.4. Determining Current Function Name
email sorter (example) :
10.17. Program: Sorting Your Mail
exception handling :
10.12. Handling Exceptions
localizing :
10.14. Redefining a Function
nesting :
10.16. Nesting Subroutines
passing by named parameter :
10.7. Passing by Named Parameter
passing by reference :
10.5. Passing Arrays and Hashes by Reference
private for modules :
12.4. Making Variables Private to a Module
private variables :
10.2. Making Variables Private to a Function
prototypes for functions :
10.11. Prototyping Functions
return context, detecting :
10.6. Detecting Return Context
return values
returning by reference :
10.9. Returning More Than One Array or Hash
returning failure :
10.10. Returning Failure
skipping selected :
10.8. Skipping Selected Return Values
saving global values :
10.13. Saving Global Values
trapping undefined function calls :
10.15. Trapping Undefined Function Calls with AUTOLOAD
substituting within strings
:
6.1. Copying and Substituting Simultaneously
substr( )
:
1.1. Accessing Substrings
substrings
:
1.1. Accessing Substrings
SUPER class
:
13.10. Accessing Overridden Methods
superclasses
:
13.0. Introduction
accessing overridden methods :
13.10. Accessing Overridden Methods
inheritance and :
13.12. Solving the Data Inheritance Problem
surface copies
:
11.12. Copying Data Structures
surl script
:
20.8. Finding Fresh Links
switch statement
19.8. Redirecting to a Different Location
19.12. Writing a Multiscreen CGI Script
Symbol::qualify( )
:
12.5. Determining the Caller's Package
symbolic links
:
9.0. Introduction
duplicating directory trees :
9.11. Program: symirror
to packages :
12.13. Referring to Packages Indirectly
symirror program (example)
:
9.11. Program: symirror
symmetric differences of lists
:
4.8. Computing Union, Intersection, or Difference of Unique Lists
Sys::Hostname module
:
17.8. Finding Your Own Name and Address
Sys::Syslog module
:
17.17. Program: backsniff
syscall( )
:
3.9. High-Resolution Timers
sysopen( )
:
7.1. Opening a File
strange filenames with :
7.2. Opening Files with Unusual Filenames
sysread( )
8.0. Introduction
17.0. Introduction
sysseek( )
:
8.0. Introduction
system( )
16.2. Running Another Program
19.6. Executing Commands Without Shell Escapes
SysV IPC
:
16.12. Sharing Variables in Different Processes
syswrite( )
8.0. Introduction
17.0. Introduction
Symbols
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A
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B
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O'Reilly & Associates. All rights reserved.