July 2002
Beginner
528 pages
12h 5m
English
Content preview from Sams Teach Yourself Unix System Administration in 24 Hours
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Hour 18 Running Your Own Name Server
A common task among Unix system administrators is setting up and running a domain name system (DNS) server. Though we’re used to thinking of Web sites, e-mail recipient systems, and other network information as specific names, the Internet actually uses unique numbers. The DNS server system maps names to numbers.
When you type a URL into your Web browser, for example, it first contacts your local DNS server asking for the IP address of the Web host you are requesting. If your local DNS server does not know the IP address, it will then forward the request to another DNS server, often one of the root DNS servers ...
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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.