September 2002
Intermediate to advanced
544 pages
13h 6m
English
Content preview from Sams Teach Yourself CGI in 24 Hours, Second Edition
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How File Redirection Works
There are a few general topics that concern CGI programming that will be helpful in understanding the rest of this book, and in developing CGI programs. Most of this information isn’t specific to CGI, but rather is general Perl or UNIX information that is used whenever you write CGI programs.
One of the core concepts of UNIX is file redirection. All UNIX shells support redirection, and the file redirection metaphor is utilized in most UNIX scripting languages as well (even when they’re running on other platforms). Before I can explain file redirection, I have to explain standard input and standard output.
Most command-line programs running under UNIX accept their input from standard input, and send their output to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.