Hour 12. Using Perl's Command-Line Tools
Until now, Perl has been a fairly simple interpreter. You type a program into a file and then invoke the Perl interpreter to run your program. The Perl interpreter is much more flexible than this, however.
Built into the interpreter is a debugger. The debugger allows you to play your Perl program like a videotape. You can rewind your program to the beginning, play it slow, play it fast, and freeze-frame it to examine the innards closely. The debugger is an often underutilized tool for finding problems in Perl programs.
Perl can also run programs that are not typed into files. For example, you can run small programs directly from your system's command prompt.
In this chapter you'll learn
How to use Perl's ...
Get Sams Teach Yourself Perl in 24 Hours now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
