Sams Teach Yourself Perl in 24 Hours (3rd Edition)

Index

[SYMBOL] [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]

U.S. Census Bureau

        zip code queries/retrievals 2nd 3rd

        zip code resources

U.S. Gazetteer Place (zip code database) 2nd 3rd

uc operator

unary operators

        named

UNC (Universal Naming Convention)

        pathnames

underscores

        numeric literals

Uniform Resource Locators [See protocols;URLs]

Unix

       awk tool

                replacement by Perl

        command prompt

        end of line

        file locking

        file permissions 2nd 3rd

                dbmopen

                implementing in Perl 2nd

        grep utility 2nd 3rd 4th

                Complete Listing for mygrep utility (Listing 10.1) 2nd 3rd

                Output for mygrep utility (Listing 10.2)

UNIX

        installing modules under 2nd 3rd 4th 5th 6th

Unix

        installing Perl

        man

        path to Perl interpreter

        pathnames

        Perl documentation

        Perl preinstalled

        Sams Teach Yourself Unix in 24 Hours

       sed tool

                replacement by Perl

       Web servers

                installing FTP-only CGI program access 2nd 3rd

                installing local CGI program access 2nd

unlink function

        removing files from directories 2nd

unmatched brackets

        program flow control

unshift function

unstructured data

        WidgetCo Bike Parts Company example 2nd

URI++* module (CPAN)

URLs (Uniform Resource Locators)

        host names

        port numbers

        protocols

        requested items

use directive

        modules 2nd

use strict

Usenet newsgroups

       archive

                Google

        CGI-specific questions

        flaming responses

        Frequently Asked Questions

        reading

       troubleshooting resources

                question procedure 2nd 3rd 4th 5th

user -defined functions [See subroutines]

Using Multiple FileInfo Objects at Once (Listing 18.8) 2nd 3rd 4th

Using the Bulk Order Function (Listing 19.12)

utilities

       grep

                getting directory listings 2nd 3rd 4th