9 login access control table
13 file specifies on which ttys or from which hosts certain users are
18 file is checked for the first entry that matches a specific user/host
19 or user/tty combination. That entry can either allow or deny login
22 Each entry have three fields separated by colon:
25 The first field indicates the permission given if the entry matches.
33 The second field is a comma separated list of users or groups for
34 which the current entry applies. NIS netgroups can used (if
35 configured) if preceeded by @. The magic string ALL matches all users.
36 A group will match if the user is a member of that group, or it is the
39 The third field is a list of ttys, or network names. A network name
40 can be either a hostname, a domain (indicated by a starting period),
41 or a netgroup. As with the user list, ALL matches anything. LOCAL
42 matches a string not containing a period.
45 If the string EXCEPT is found in either the user or from list, the
46 rest of the list are exceptions to the list before EXCEPT.
48 If there's a user and a group with the same name, there is no way to
49 make the group match if the user also matches.
55 function was written by
56 Wietse Venema. This manual page was written for Heimdal.