In general, only commands that modify (write to) a VOB or a project VOB are subjected to identity checking. The following hierarchy of identity checking is used, in a command-specific manner, to determine whether a command can proceed or be canceled:
Both file system and non-file-system objects have an owner and a group; this information is stored with the object. When an object is created, its owner and group are set to that of the user who created it. Use the protect command to change the owner (–chown) or group (–chgrp) of the object. The describe command displays the owner and group of the object.
The scheduler maintains its own access control list (ACL), which determines who is allowed access to the scheduler and to the ACL itself. See the schedule reference page for more information.
The reference page for a command lists the special identities (if any) required to use the command along with other restrictions on its use.
The sections below list all cleartool subcommands, categorized by their identity requirements. For information about identity checking for ClearCase commands (that is, other than cleartool subcommands), see the corresponding reference pages.