Can you explain briefly the main concepts and command line tools used to manage file permissions?
Each file has rights for three different categories:
Rights mean the right to read the file, the right to write to the file, or the right to execute the file in case of a script or program.
On the CLI, you may
If you'd like to know more about each of these tools, open a terminal and type
Here's a nice tutorial on it: http://www.elated.com/articles/understanding-permissions/