Which of the following sets has the group permissions highlighted?

Which of the following sets has the group permissions highlighted?

• rw-rw-r--
• rw-rw-r--
• rw-rw-r--
• rw-rw-r--is the correct answer

For more Questions and Answers go to the below link:

Linux Unhatched Assignments Assessment Exam Answers

The correct answer for highlighting the group permissions is:

rw-rw-r--

Explanation:

In a Linux file permissions string like rw-rw-r--, the group permissions are represented by the second set of three characters. Here’s the breakdown:

Structure of Permissions

1. First character: File type:
   • -: Regular file.
   • d: Directory.
   • l: Symbolic link.

   In this case, - indicates a regular file.

2. Next 9 characters: Permissions split into three groups of three:
   • Owner Permissions (First set): The first three characters (rw-) represent the file owner’s permissions.
   • Group Permissions (Second set): The second three characters (rw-) represent the file group’s permissions.
   • Others Permissions (Third set): The last three characters (r--) represent the permissions for others.

Group Permissions in rw-rw-r--

• Second set of three characters (rw-):
  • r: Group members can read the file.
  • w: Group members can write (modify) the file.
  • -: Group members cannot execute the file.

This set indicates that users in the file’s group can read and write, but cannot execute the file.

Why rw-rw-r-- Highlights Group Permissions

In the permission string, the second set of characters (rw-) explicitly defines the permissions for the group. This makes rw-rw-r-- the correct choice for highlighting group permissions.

Examples for Clarification

1. Viewing Group Permissions: Use the ls -l command to check file permissions:
   ls -l file1.txt
   

   Output:

   -rw-rw-r-- 1 user group 1234 Nov 28 15:00 file1.txt
   

   • rw- (group permissions) means group members can read and write but cannot execute the file.
2. Changing Group Permissions: Use the chmod command with g (for group) to modify group permissions:
   • Remove write permission for the group:
     chmod g-w file1.txt
     

   • Add execute permission for the group:
     chmod g+x file1.txt
     

Summary

The group permissions in rw-rw-r-- are rw-, which allow group members to read and write the file but not execute it. Since the second set of characters (rw-) represents group permissions, rw-rw-r-- is the correct answer.