Day 6 Task: File Permissions and Access Control Lists

Introduction:

• Brief overview of the importance of file permissions in a Unix-like operating system.

• Introduction to the concept of Access Control Lists (ACLs) as an extension to traditional file permissions.

File Permissions:

1. Permission Types:

   • Explanation of read (r), write (w), and execute (x) permissions.

2. Permission Levels:

   • Overview of user (u), group (g), and others (o) permission levels.

3. Setting and Modifying Permissions:

   • Demonstration of using the chmod command to set and modify permissions.

   • Examples of numeric representation for permissions.

Viewing and Understanding Permissions:

• Introduction to the ls command with the -l option to view detailed file information.

• Explanation of the output format and what each column represents.

Access Control Lists (ACLs):

1. Introduction to ACLs:

   • Explanation of ACLs and their role in enhancing file access control.

2. Viewing ACLs:

   • Usage of the getfacl command to view ACLs for a file or directory.

3. Setting ACLs:

   • Demonstrating the use of the setfacl command to set ACLs for specific users or groups.

Examples and Practical Use Cases:

• Real-world examples of scenarios where adjusting file permissions and ACLs is necessary.

• Common mistakes to avoid when managing file permissions.

Conclusion:

• Recap of the importance of proper file permissions.

• Summary of the key points discussed in the blog post.