File Permissions & Ownership

Question 1

What does the symbol ‘r’ represent?

Answer 1

Read permission

‘r’ allows the user to read the contents of a file.

Question 2

What does the symbol ‘w’ represent?

Answer 2

Write permission

‘w’ allows the user to modify or delete the contents of a file.

Question 3

What does the symbol ‘x’ represent?

Answer 3

Execute permission

‘x’ allows the user to run the file as a program.

Question 4

What command is used to show file permissions?

Answer 4

ls -l

This command lists files in long format, displaying permissions and other details.

Question 5

What does ‘chmod 755 <file>' do?</file>

Answer 5

Change permissions to rwxr-xr-x

This command sets read, write, and execute permissions for the user, and read and execute permissions for the group and others.

Question 6

What does ‘chmod u+x <file>' accomplish?</file>

Answer 6

Add execute permission to the user

This command modifies the file permissions to give the user execute rights.

Question 7

What is the purpose of the command ‘chown user:group <file>'?</file>

Answer 7

Change file owner and group

This command assigns a new owner and group to the specified file.

Question 8

What does the command ‘umask’ display?

Answer 8

Show default permissions

This command shows the default permission settings that will be applied to newly created files.