Access-control list

In computer security, an access-control list (ACL) is a list of permissions^[a] associated with a system resource (object or facility). An ACL specifies which users or system processes are granted access to resources, as well as what operations are allowed on given resources.^[1] Each entry in a typical ACL specifies a subject and an operation. For instance,

• If a file object has an ACL that contains (Alice: read,write; Bob: read), this would give Alice permission to read and write the file and give Bob permission only to read it.
• If the RACF profile CONSOLE CLASS(TSOAUTH) has an ACL that contains (ALICE:READ), this would give ALICE permission to use the TSO CONSOLE command.

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