Scenario: Secure Data Management for a Research Team

In a research institution, a team of scientists collaborates on sensitive data analysis projects. To ensure data security and proper access control, the team utilizes Linux ACLs to manage file system permissions.

Script 1: Advanced Setup
The team administrator sets up the initial environment. They create a dedicated directory /research_data where all project-related files will be stored. The directory structure includes subfolders for each project and individual files for data analysis.

User accounts are created for the team members:

    User1: Dr. Alex, the project lead
    User2: Dr. Lisa, a senior researcher
    User3: Dr. Sam, a junior researcher

Each team member is assigned specific roles and responsibilities within the project directory:

    Dr. Alex has full control over the entire /research_data directory and all its subfolders and files.
    Dr. Lisa has read and execute permissions on all projects, allowing her to view and contribute to ongoing research.
    Dr. Sam has limited access, with read-only permissions on certain projects to review findings and learn from ongoing research activities.

Script 2: Advanced ACL Setup
Building upon the initial setup, the administrator applies fine-grained ACL permissions to enhance security and collaboration within the research team.

    Dr. Alex's permissions are explicitly defined, granting full read, write, and execute access to all project directories and files. Additionally, default ACLs are set to ensure any new files or directories created by Dr. Alex inherit these permissions.
    Dr. Lisa's access is configured with read and execute permissions on project directories, allowing her to view data and execute analysis scripts. Default ACLs are also applied to maintain consistent permissions for any new content created by Dr. Lisa.
    Dr. Sam's permissions are limited to read-only access on certain project directories. This ensures Dr. Sam can review research findings but cannot modify or delete critical data.