WYNTK: UNIX System Admininistrator

Each UNIX file has its own distinct set of permissions to define who can read, write, or execute the file.

The way that file security works on UNIX systems is that each file has its own set of permissions. These permissions define who on the system can read, write, or execute the file.

Being able to read a file is easy to understand: it just means that you can look at the file with a program like more, maybe even browse through it using your editor.

Being able to write the file is also easy to understand. It means that you can make changes to the file.

Being able to execute a file is just a fancy way of saying that you can run it as a command.