March 2002
Beginner
504 pages
10h 47m
English
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Owners, Groups, and Permissions
File permissions and file ownership are important components of UNIX because they provide a secure method for storing files. Every file in UNIX has the following attributes:
Owner permissions
Group permissions
Other (world) permissions
The owner's permissions determine which actions the owner of the file can perform on the file. The group's permissions determine which actions a user, who is a member of the group that a file belongs to, can perform on the file. The permissions for others indicate which action all other users can perform on the file.
The actions that can be performed on a file are read, write, and execute. If a user has read permissions, that user can view the contents of a file. A user with write ...
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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.