Mastering The Linux Shell – Getting Permission

Under Linux, access to files and directories is controlled by a system of permissions. Those permissions define who can see a file, whether they can modify it in any way, and in the case of some files, whether the commands within that file (or the file itself) can be executed. By executed, we mean "can we run that program?". Let's take a look at permissions and how you you can work with them. Your introduction is one of the first commands I told you about, "ls", the program you use to list files. When we use the 'ls -l' command, …