what is an acl
Access control list An access control list (ACL), with respect to a computer file system, is a list of permissions attached to an object.An ACL specifies which users or system processes are granted access to objects, as well as what operations are allowed on given objects.Each entry in a typical ACL specifies a subject and an operation.n the 1990s the ACL and RBAC models were extensively tested and used to administrate file permissions. A filesystem ACL is a data structure (usually a table) containing entries that specify individual user or group rights to specific system objects such as programs, processes, or files. Anterior cruciate ligament The anterior cruciate ligament (ACL) is one of a pair of cruciate ligaments (the other being the posterior cruciate ligament) in the human knee.They are also called cruciform ligaments as they are arranged in a crossed formation.ehabilitation is crucial to any ACL surgery. ACL surgery typically takes 6 to 9 months for complete recovery and return to sports or such activity. Revision ACL surgery will often take 9 months to more than a year. During this time, the doctor should guide the patient through the rehabilitation process.