Linux Permissions Lab

Understand file modes, ownership, and the executable bit.

1 Simulation: Understanding Notation

-rw-r--r-- Read-Only Data
Owner: RW
Group: R
Others: R

This is a standard text file. The owner can read and write, but no one can execute it as a program.

-rwxr-xr-x Executable Script
Owner: RWX
Group: R-X
Others: R-X

The x indicates the Executable bit. This allows the system to run the file as a command or script.

2 Knowledge Check

Looking at the permission strings below, which file is executable by the owner?