If you're new to the UNIX operating system, especially if you're familiar with Windows, you'll find that the file access control mechanisms might not be exactly what you expect. File permissions and ...

There are a number of tricks that you can implement on a Unix system to lessen the chance that you will accidentally erase important files. The two that we’ll examine will 1) help protect files in an ...

You are not alone. In fact, I was pretty confused by file permissions for a long time, but it’s actually very simple! Here’s why you should care, and how to understand the permissions that keep your ...

Have you ever entered “ls –l” into a UNIX command line and seen something like this? Do you wonder what the “drwxr–r– “ means or why you can’t edit, open, or even read some files or directories? Well, ...