Question

In Unix/Linux, you cannot run a program if the execute permission is set. (True/False)

Hint:

To run any script or compiled binary in Linux, you must set the execute permission flag using the command: chmod +x filename. Without this flag, the operating system will refuse to execute the file.

Answer 1

Step 1: Analyzing Linux File Security:
In Unix-like systems, files are classified into different types (text files, directories, executable binaries, and scripts). To run a script or binary file as an executable program, the operating system requires explicit execution permissions.

Step 2: The Role of the Execute Permission (x):
The execute permission flag (x) tells the operating system kernel that the file can be executed as a program.

• If the execute permission (x) is set: The user can launch the file as an active process.
• If the execute permission (x) is not set (denied): The system blocks execution, returning a “Permission Denied” error, even if the file contains valid executable binary code.

Step 3: Evaluating the Statement:
The given statement claims that you cannot run a program if the execute permission is set. Since you require the execute permission to run a program, this statement is completely False.