ACL (Access Control List) in Linux is a feature that provides more fine-grained permissions for files and directories beyond the standard owner, group, and others model. An ACL allows you to define specific permissions for individual users or groups on a per-file or per-directory basis. This is useful in scenarios where you need to grant or restrict access to certain files for specific users without changing the file’s group ownership or permissions. ACLs are managed using commands like getfacl (to view ACLs) and setfacl (to set or modify ACLs). This system enhances security and flexibility in managing access to resources in multi-user environments.
