An Example: The Ubiquitous Hello World
A long-standing tradition in the programming world is the Hello World program. When a programmer encounters a new language or a new system, the first program they are supposed to write simply prints “Hello, World!” to the screen. Far be it for me to go against tradition, so the first Perl script we'll examine in this book will do just that. In this section, you'll run a version of Hello World as a one-liner, and then in the next section you'll run Hello World as a standalone script.
Creating the One-Liner
Hello World as a one-liner is about the simplest Perl script you can do, and it's a quick way to find out if you've got Perl installed correctly on your system.
On Unix, from a command prompt, type the ...
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