Perl (Unix Power Tools, 3rd Edition)
Chapter 41. Perl
Contents:
High-Octane Shell Scripting
Checking your Perl Installation
Compiling Perl from Scratch
Perl Boot Camp, Part 1: Typical Script Anatomy
Perl Boot Camp, Part 2: Variables and Data Types
Perl Boot Camp, Part 3: Branching and Looping
Perl Boot Camp, Part 4: Pattern Matching
Perl Boot Camp, Part 5: Perl Knows Unix
Perl Boot Camp, Part 6: Modules
Perl Boot Camp, Part 7: perldoc
CPAN
Make Custom grep Commands (etc.) with Perl
Perl and the Internet
41.1. High-Octane Shell Scripting
Perl[123] is
an
ecclectic, interpreted language with deep roots in Unix. It was
originally written by Larry Wall, creator of other Unix staples such
as patch and rn, to help with
system administration tasks. Because many of its variables are
prefixed with $, Perl often looks like an
awk program or even a Bourne shell script. Like
all appearances, this too can be deceiving. Perl is a complete
programming language that supports both structured and object
oriented programming. Getting started with Perl is easy, since many
of the Bourne shell tricks you've seen will work
(after a fashion) under Perl. As your knowledge grows,
you'll find that Perl will help you scratch
increasingly obscure itches. Because Perl has been ported to many
different platforms, it brings a Unix-like API to whichever operating
system is hosting it. Perl makes cross-platform programming a
reality.
[123]A word on casing: "Perl"
refers to the language as an abstract concept;
"perl" refers to
the program installed on your machine.
The complete guide to Perl is
O'Reilly's Programming Perl, a book that weighs in at over 1500 pages. Therefore,
only the barest of essentials can be presented here to help you
identify your Perl installation, tinker with existing scripts, and
install new modules. Luckily,
Perl always comes with
documentation
that can be accessed through the perldoc (Section 41.10) system.
-- JJ
40.11. Finding and Installing RPM Packaged Software41.2. Checking your Perl Installation
Copyright © 2003 O'Reilly & Associates. All rights reserved.
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