How do you identify the ownership and permissions of a file or folder in the...

A Service Set Identifier, or SSID, is used to identify a Wi-Fi network name and associated configuration.

Standard UNIX file system permissions allow only for permissions to be set for one owner, one group, and all others. ACLs, on the other hand, allow for an essentially unlimited list of permissions entries.

An item's ownership and permissions can be identified using the Info or Inspector windows in the Finder.

A user's home folder permissions can be reset from the Reset Password application on OS X Recovery.