February 2003
Intermediate to advanced
1440 pages
30h 42m
English
Content preview from HP-UX 11i System Administration Handbook and Toolkit, Second Edition
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Permissions
The best place to begin discussing permissions is by issuing the ls command, which lists the contents of directories. Permissions are the means by which files and directories are made secure on your UNIX system. Because UNIX is multi-user, potentially thousands of users could be accessing the files on a system. Permissions controls who has access to what files.
Here is an example ls -l command and output:
$ ls -l sort
-rwxr-x--x 1 marty users 120 Jul 26 10:20 sort
Issuing this command has produced a lot of information relating to a file called sort. Let's begin to understand what this listing has produced by analyzing the first set of characters (-rwxr-x--x). This set of characters is made up of four distinct fields, as shown in ...
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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.