Which command displays the Unix access control list of the file Company.qbd?

The command that displays the Unix access control list (ACL) of the file Company.qbd is getfacl Company.qbd. This command is specifically designed to retrieve and display the ACL of a file or directory in a user-friendly format.

Access Control Lists provide a more granular permission system than the traditional Unix permissions model, allowing for various users and groups to have different levels of access to files and directories. Using getfacl, you can see who has read, write, and execute permissions for the file, along with any additional ACL entries that may have been configured.

Each of the other commands listed does not correctly represent the standard way to view an ACL in a Unix-like operating system. For instance, facl list is not a recognized command in standard Unix systems; ADfacl does not exist in conventional usage; and smbfacl is typically associated with Samba, which is used primarily for interacting with Windows filesystems and does not display Unix-style ACLs directly. Therefore, getfacl is the appropriate command for this task.