You use the chmod command to set each of these permissions. To see what permissions have been set on a file or directory, we can use ls command options. We can use the -l (long format) option to have ...

Permissions have two parts: an action and a set of users. The three actions—read, write, and execute—define what can be done ...

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, ...

ITworld.com – If you have tried to give away any files lately on any of your Unix systems (i.e., without first becoming root), you may have been surprised to learn that you can’t. On most Unix systems ...

To get started as a Linux (or Unix) user, you need to have a good perspective on how Linux works and a handle on some of the most basic commands. This first post in a “getting started” series examines ...

One of Linux's strengths as an operating system is its ability to be configured and tweaked to suit your tastes. Using the command line allows you to issue powerful commands that are unavailable to ...