Index

Search | Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

# Index: U

u command (CPAN.pm) : Perl in a Nutshell, Chapter 2, Reference: u
-u file test operator
  Learning Perl, 10.5. The -x File Tests
  Perl in a Nutshell, 4.5.8. File Test Operators
  Programming Perl, 2.5.10. Named Unary and File Test Operators
-u option (dprofpp) : Perl in a Nutshell, 6.5. The Perl Profiler
-U option (dprofpp) : Perl in a Nutshell, 6.5. The Perl Profiler
\u string escape : Perl Cookbook, 1.9. Controlling Case
\U string escape : Perl Cookbook, 1.9. Controlling Case
-u switch, perl
  Perl in a Nutshell, 3.2. Command-Line Options
  Programming Perl, 6.1.2. Switches
-U switch, perl
  Perl in a Nutshell, 3.2. Command-Line Options
  Programming Perl, 6.1.2. Switches
uc()
  Perl Cookbook, 1.9. Controlling Case
  Perl in a Nutshell, Chapter 5, Reference: uc
  Programming Perl, 3.2.177. uc
ucfirst()
  Perl Cookbook, 1.9. Controlling Case
  Perl in a Nutshell, Chapter 5, Reference: ucfirst
  Programming Perl, 3.2.178. ucfirst
UDP protocol
  Perl Cookbook, 17.4. Setting Up a UDP Client
  Perl Cookbook, 17.5. Setting Up a UDP Server
  Programming Perl, 6.2.4.3. UDP: message passing
UDP/IP (User Datagram Protocol) : Advanced Perl Programming, 12.1. Networking Primer
udpmsg program (example) : Perl Cookbook, 17.5. Setting Up a UDP Server
udpqotd program (example) : Perl Cookbook, 17.5. Setting Up a UDP Server
Uhler, Stephen : Advanced Perl Programming, 14.2.1. GUI Forms: The Easy Way
uid (user ID)
  (see also $ variables, $< variable; $ variables, $> variable)
  Learning Perl, 10.6. The stat and lstat Functions
  Programming Perl, 2.9.3. Global Special Variables
  Programming Perl, 3.2.15. chown
  accessing information : Learning Perl, 16.1. Getting Password and Group Information
  assumed : Programming Perl, 6.2.2.2. Talking to yourself
  passwd file entry from : Programming Perl, 3.2.63. getpwuid
$uid file statistic : Programming Perl, 3.2.159. stat
$UID ($<) variable
  Perl in a Nutshell, 4.4.1. Global Special Variables
  Programming Perl, 2.9.3. Global Special Variables
  Programming Perl, 7.2.13. English - Use English or awk Names for Punctuation Variables
uidl() (Net::POP3) : Perl in a Nutshell, Chapter 14, Reference: uidl
umask()
  Perl in a Nutshell, Chapter 5, Reference: umask
  Programming Perl, 3.2.179. umask
umask values : Perl Cookbook, 7.1. Opening a File
uname() (POSIX) : Perl Cookbook, 17.8. Finding Your Own Name and Address
unary operators
  Perl in a Nutshell, 4.5.2. Unary Operators
  Programming Perl, 7.2.48.2. Calling conventions for unary operations
  Programming Perl, 7.2.48.3. Overloadable operations
  arithmetic : Programming Perl, 1.5.4. Autoincrement and Autodecrement Operators
  glob operator as : Programming Perl, 2.3.7.3. Filename globbing operator
  ideographic : Programming Perl, 2.5.5. Ideographic Unary Operators
  named
    Programming Perl, 2.3.7.3. Filename globbing operator
    Programming Perl, 2.5.10. Named Unary and File Test Operators
unbuffered input/output
  Perl Cookbook, 7.0. Introduction
  Perl Cookbook, 7.12. Flushing Output
  Perl Cookbook, 8.0. Introduction
  Perl Cookbook, 15.6. Reading from the Keyboard
  Programming Perl, 3.2.43. getc
UNC path : Learning Perl on Win32 Systems, 10.3. Using Pathnames and Filenames
uncompressing Perl source code
  Perl in a Nutshell, 2.3.1. Installing on Unix
  Perl in a Nutshell, 2.3.2.2. Standard Perl distribution
uncontrol subroutine : Perl Cookbook, 15.8. Using POSIX termios
undef
  Perl Cookbook, 11.0. Introduction
  Learning Perl on Win32 Systems, 2.9. The Undefined Value
  Perl in a Nutshell, Chapter 5, Reference: undef
  Perl in a Nutshell, 4.2.4. Variables
  Programming Perl, 3.2.25. defined
  Programming Perl, 3.2.180. undef
  Programming Perl, 8.3.1. Time Efficiency
  array element access : Learning Perl, 3.4.2. Array Element Access
  assigning lists and : Learning Perl, 3.4.1. Assignment
  associative array elements : Learning Perl, 5.2. Hash Variables
  to control dbmopen() : Learning Perl, 17.2. Opening and Closing DBM Hashes
  as default value for $^I : Learning Perl, 17.5. Variable-Length (Text) Databases
  definition of : Learning Perl, 2.9. The Undefined Value
  globbing return value : Learning Perl, 12.2. Globbing
  initial value of local variables : Learning Perl, 8.5. Private Variables in Functions
  pop() return value : Learning Perl, 3.4.3. The push and pop Functions
  readdir() return value : Learning Perl, 12.5. Reading a Directory Handle
  split() return value : Learning Perl, 7.6.1. The split Function
  STDIN and : Learning Perl, 6.1. Input from STDIN
  to control dbmopen() : Learning Perl on Win32 Systems, 17.2. Opening and Closing DBM Hashes
undefined (undef) value : Perl Cookbook, 1.0. Introduction
undefined scalars : Programming Perl, 2.3.2. Scalar Values
  Boolean context and : Programming Perl, 2.3.3.2. Boolean context
undelete_message() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: undelete_message
-underline option (widgets) : Perl in a Nutshell, 18.3. Common Widget Configuration Options
underscore : (see _ (underscore))
undump program : Perl in a Nutshell, 3.2. Command-Line Options
unequal : (see equality operators; relational operators)
unescape_from() (Mail::Internet) : Perl in a Nutshell, Chapter 14, Reference: unescape_from
Unicode : Perl Cookbook, 1.0. Introduction
unimport()
  Perl Cookbook, 1.18. Program: psgrep
  Perl Cookbook, 13.15. Creating Magic Variables with tie
uninitialized variables : Programming Perl, 1.2.1.1. Singularities
uninstall() : Programming Perl, 7.2.16. ExtUtils::Install - Install Files from Here to There
unions of lists : Perl Cookbook, 4.7. Finding Elements in One Array but Not Another
unique list elements, extracting : Perl Cookbook, 4.6. Extracting Unique Elements from a List
unique_name() (Net::FTP) : Perl in a Nutshell, Chapter 16, Reference: unique_name
uniqueness of objects : Advanced Perl Programming, 11.2.8. Uniqueness of Objects in Memory
UNIVERSAL module
  Advanced Perl Programming, 7.3. UNIVERSAL
  Perl Cookbook, 13.8. Determining Subclass Membership
  Perl in a Nutshell, 8.163. UNIVERSAL
  Programming Perl, 5.3.4. A Class Is Simply a Package
Unix
  #! (shebang) line : Perl in a Nutshell, 3. The Perl Interpreter
  clients/servers : Programming Perl, 6.2.4.2. UNIX-domain clients and servers
  command processing : Perl in a Nutshell, 3.1. Command Processing
  installing Perl on : Perl in a Nutshell, 2.3.1. Installing on Unix
  security bugs : Programming Perl, 6.3.1.3. Security bugs
Unix domain sockets
  Perl Cookbook, 17.0. Introduction
  Perl Cookbook, 17.6. Using UNIX Domain Sockets
  Perl in a Nutshell, 13. Sockets
UnixDate() : Perl Cookbook, 3.7. Parsing Dates and Times from Strings
unless statement
  (see if statement)
  Learning Perl on Win32 Systems, 9.5. Expression Modifiers
  Perl in a Nutshell, 4.3.1. Conditionals and Loops
  Perl in a Nutshell, 4.3.1.4. Modifiers
  example of : Learning Perl on Win32 Systems, 10.4. A Slight Diversion: die
unlink()
  Perl Cookbook, 9.2. Deleting a File
  Perl Cookbook, 9.8. Removing a Directory and Its Contents
  Learning Perl, 13.1. Removing a File
  Perl in a Nutshell, Chapter 5, Reference: unlink
  Programming Perl, 3.2.181. unlink
  examples of : Learning Perl, A.12. Chapter 13, File and Directory Manipulation
unlinking : (see deleting)
unmark() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unmark
unmark_list() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unmark_list
unmark_range() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unmark_range
unmarked_articles() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unmarked_articles
unordered lists : (see hashes (associative arrays))
unpack()
  Perl Cookbook, 1.1. Accessing Substrings
  Perl Cookbook, 1.4. Converting Between ASCII Characters and Values
  Perl Cookbook, 8.15. Reading Fixed-Length Records
  Learning Perl, 16.2. Packing and Unpacking Binary Data
  Perl in a Nutshell, Chapter 5, Reference: unpack
  Programming Perl, 3.2.182. unpack
  converting binary and decimal numbers : Perl Cookbook, 2.4. Converting Between Binary and Decimal
  example of
    Learning Perl, 16.3. Getting Network Information
    Learning Perl, 17.4. Fixed-Length Random Access Databases
    Learning Perl on Win32 Systems, 16.3. Getting Network Information
    Learning Perl on Win32 Systems, 17.4. Fixed-Length Random-Access Databases
  gethostbyname() return values and : Learning Perl, 16.3. Getting Network Information
  return values from gethostbyname() : Learning Perl on Win32 Systems, 16.3. Getting Network Information
unpack_sockaddr_in() (Socket) : Perl in a Nutshell, Chapter 13, Reference: unpack_sockaddr_in
unpack_sockaddr_un() (Socket) : Perl in a Nutshell, Chapter 13, Reference: unpack_sockaddr_un
unpacking Perl source code
  Perl in a Nutshell, 2.3.1. Installing on Unix
  Perl in a Nutshell, 2.3.2.2. Standard Perl distribution
unpost() (Menu widget) : Perl in a Nutshell, 18.15.2. Menu Methods
unsafe operations
  Perl in a Nutshell, 3.2. Command-Line Options
  Programming Perl, 6.1.2. Switches
unshift()
  Learning Perl, 3.4.4. The shift and unshift Functions
  Perl in a Nutshell, Chapter 5, Reference: unshift
  Programming Perl, 3.2.183. unshift
  circular lists : Perl Cookbook, 4.16. Implementing a Circular List
  Tie::IxHash module and : Perl Cookbook, 5.6. Retrieving from a Hash in Insertion Order
unsub_groups() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unsub_groups
unsubscribe() (News::Newsrc) : Perl in a Nutshell, Chapter 15, Reference: unsubscribe
untie()
  Perl Cookbook, 14.1. Making and Using a DBM File
  Perl in a Nutshell, Chapter 5, Reference: untie
  Programming Perl, 3.2.23. dbmclose
  Programming Perl, 3.2.184. untie
  Programming Perl, 5.4. Using Tied Variables
until statement
  (see while loops)
  Learning Perl on Win32 Systems, 9.5. Expression Modifiers
  Perl in a Nutshell, 4.3.1.1. while loops
  Perl in a Nutshell, 4.3.1.4. Modifiers
up-arrow, in regular expressions : Learning Perl, 7.3.1. Single-Character Patterns
update_message() (Mail::Folder) : Perl in a Nutshell, Chapter 14, Reference: update_message
uppercase : (see case/capitalization)
URI modules : Perl in a Nutshell, 17.5. The URI Module
  URI::Escape : Perl in a Nutshell, 17.5. The URI Module
  URI::Heuristic
    Perl Cookbook, 20.7. Finding Stale Links
    Perl in a Nutshell, 17.5. The URI Module
  URI::URL : Perl in a Nutshell, 17.5.2. URI::URL
  URI::URL module : Perl in a Nutshell, 17.1. LWP Overview
URIs (Universal Resource Identifiers) : Perl in a Nutshell, 17.1. LWP Overview
url()
  CGI.pm module : Perl in a Nutshell, Chapter 10, Reference: url
  HTTP::Daemon module : Perl in a Nutshell, Chapter 17, Reference: url
  HTTP::Request module : Perl in a Nutshell, Chapter 17, Reference: url
urlify program : Perl Cookbook, 6.21. Program: urlify
URLs (uniform resource locators)
  (see also Win32 modules, Win32::Internet module)
  Perl Cookbook, 19.0. Introduction
  Learning Perl, 19. CGI Programming
  Perl in a Nutshell, Chapter 19, Reference: CanonicalizeURL
  encoding : Perl in a Nutshell, 9.2. URL Encoding
  extra path information : Perl in a Nutshell, 9.3. Extra Path Information
  extracting from HTML : Perl Cookbook, 20.3. Extracting URLs
  fetching from Perl scripts : Perl Cookbook, 20.1. Fetching a URL from a Perl Script
  putting HTML links around : Perl Cookbook, 6.21. Program: urlify
  redirecting CGI requests : Perl Cookbook, 19.8. Redirecting to a Different Location
  URI::URL module
    Perl in a Nutshell, 17.1. LWP Overview
    Perl in a Nutshell, 17.5.2. URI::URL
use declarations (pragmas)
  (see also pragmas)
  Advanced Perl Programming, 6.2. Packages and Files
  Advanced Perl Programming, 6.5. Importing Symbols
  Perl Cookbook, 12.0. Introduction
  Learning Perl, 19.4. Passing Parameters via CGI
  Learning Perl on Win32 Systems, 18.4. Passing Parameters via CGI
  Learning Perl on Win32 Systems, 19.2. Creating Automation Objects
  Perl in a Nutshell, 7. Packages, Modules, and Objects
  Perl in a Nutshell, 7.2. Modules
  trapping errors in : Perl Cookbook, 12.2. Trapping Errors in require or use
  use autouse : Perl Cookbook, 12.3. Delaying use Until Run Time
  use English : Perl in a Nutshell, 4.4. Special Variables
  use integer : Perl in a Nutshell, 4.5.3. Arithmetic Operators
  use lib : Perl Cookbook, 12.7. Keeping Your Own Module Directory
  use locale
    Perl Cookbook, 1.9. Controlling Case
    Perl Cookbook, 6.0. Introduction
    Perl Cookbook, 6.12. Honoring Locale Settings in Regular Expressions
  use overload pragma : Perl Cookbook, 13.14. Overloading Operators
  use Socket : Perl in a Nutshell, 13.1.1. Initializing a Socket
  use strict : Programming Perl, 8.2.2. Frequently Ignored Advice
  use vars : Programming Perl, 7.2.2. AutoLoader - Load Functions Only on Demand
use_alarm() (LWP::UserAgent) : Perl in a Nutshell, Chapter 17, Reference: use_alarm
use_named_parameters() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: use_named_parameters
Usenet news
  Perl Cookbook, 18.4. Reading and Posting Usenet News Messages
  Perl in a Nutshell, 15. Usenet News
  Net::News module : Perl in a Nutshell, 15.2. Net::NNTP
  News::Newsrc module : Perl in a Nutshell, 15.3. The News::Newsrc Module
  Perl-related newsgroups
    Learning Perl, Support
    Perl in a Nutshell, 1.4.1. The comp.lang.perl.* Newsgroups
use() : Perl in a Nutshell, Chapter 5, Reference: use
user()
  Mail::Address module
    Perl in a Nutshell, Chapter 14, Reference: user
    Perl in a Nutshell, 14.2.6. Parse Email Addresses with Mail::Address
  Net::POP3 module
    Perl in a Nutshell, Chapter 14, Reference: user
    Perl in a Nutshell, 14.1.3. Retrieving Email with Net::POP3
  URI::URL module : Perl in a Nutshell, Chapter 17, Reference: user
User() (Mail::POP3Client) : Perl in a Nutshell, Chapter 14, Reference: User
user_agent() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: user_agent
USER command (POP3) : Perl in a Nutshell, 14.1.3. Retrieving Email with Net::POP3
user-defined functions : (see subroutines)
user-defined structures : Advanced Perl Programming, 2.1. User-Defined Structures
  matrices example : Advanced Perl Programming, 2.2. Example: Matrices
user efficiency : Programming Perl, 8.3.6. User Efficiency
user function : (see subroutines)
User::grent module : Perl in a Nutshell, 8.164. User::grent
user ID : (see uid (user ID))
user input : (see input)
user interfaces : (see GUIs (graphical user interfaces))
user_name() (CGI.pm) : Perl in a Nutshell, Chapter 10, Reference: user_name
User::pwent module : Perl in a Nutshell, 8.165. User::pwent
UserAgent() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: UserAgent
UserAgent object
  Perl in a Nutshell, 17.1. LWP Overview
  Perl in a Nutshell, 17.2. The LWP Modules
  Perl in a Nutshell, 17.2.3. LWP::UserAgent
UserCreate() (Win32::NetAdmin) : Perl in a Nutshell, Chapter 19, Reference: UserCreate
Username() (Win32::Internet) : Perl in a Nutshell, Chapter 19, Reference: Username
usernames
  Learning Perl, 16.1. Getting Password and Group Information
  Programming Perl, 3.2.62. getpwnam
users
  fetching information on : Perl in a Nutshell, 5.1. Perl Functions by Category
  user CPU time
    Programming Perl, 3.2.174. times
    Programming Perl, 7.2.4.1. Notes
userstats program (example) : Perl Cookbook, 14.1. Making and Using a DBM File
"uses" relationship : Programming Perl, 5.5.7. Implementation (the "Uses" Relationship)
/usr/dict/words : Learning Perl, 7.7. Exercises
utime()
  Perl Cookbook, 9.1. Getting and Setting Timestamps
  Learning Perl, 13.7. Modifying Timestamps
  Learning Perl on Win32 Systems, 13.5. Modifying Timestamps
  Perl in a Nutshell, Chapter 5, Reference: utime
  Programming Perl, 3.2.186. utime
utmp file : (see /etc/utmp file)
UUCP : Learning Perl, UUCP
uvi program (example) : Perl Cookbook, 9.1. Getting and Setting Timestamps

Search | Symbols | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Copyright © 1999 O'Reilly & Associates, Inc. All Rights Reserved.