Which of the following sets has the other permissions highlighted?

Which of the following sets has the other permissions highlighted?

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

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Linux Unhatched Assignments Assessment Exam Answers

The correct answer for highlighting the “other permissions” is:

rw-rw-r--

Explanation:

In a Linux file permissions string like rw-rw-r--, the “other permissions” are represented by the third 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 divided into three sets of three:
   • Owner Permissions (First set): rw-
   • Group Permissions (Second set): rw-
   • Others Permissions (Third set): r--

Other Permissions in rw-rw-r--

• Third set of three characters (r--):
  • r: Others (everyone who is not the owner or in the group) can read the file.
  • -: Others cannot write to the file.
  • -: Others cannot execute the file.

This means that “others” (all users outside the owner and group) can only read the file, but cannot modify or execute it.

Why rw-rw-r-- Highlights Other Permissions

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

Practical Examples

1. Viewing Other 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
   

   • r-- (other permissions) means “others” can only read the file.
2. Changing Other Permissions: Use the chmod command with o (for others) to modify other permissions:
   • Remove read permission for others:
     chmod o-r file1.txt
     

   • Add execute permission for others:
     chmod o+x file1.txt
     

Summary

The other permissions in rw-rw-r-- are represented by r--, meaning “others” can only read the file. Since the third set of characters highlights the other permissions, rw-rw-r-- is the correct answer.