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group(5) [ultrix man page]

group(5)							File Formats Manual							  group(5)

Name
       group - group file

Description
       The file is an ASCII file that contains the following information for each group:

       Group name
       Encrypted password
       Numerical group ID
       Comma-separated list of all users allowed in the group

       Each  group name is separated from the next by a new line.  The fields are separated by colons.	If the password field is null, no password
       is demanded.

       Because of the encrypted passwords, it can and does have general read permission and can be used, for example, to map numerical	group  IDs
       to names.

       The  database  can be distributed in a network by a naming service, such as Yellow Pages or BIND/Hesiod.  See the Guide to the Yellow Pages
       Service or the Guide to the BIND/Hesiod Service for setup information.

Restrictions
       The command will not change the passwords.

       Increasing the number of groups that a user is in beyond 8 can affect services that use SUN RPC.  The version of SUN RPC shipped with ULTRX
       V4.2  supports up to 32 groups.	Prior versions supported users being in up to 8 groups.  Users who increase the number of groups that they
       are a member of to more than 8 will not be able to NFS mount file systems from ULTRIX servers older than V4.2.  If root group membership is
       increased to more than 8 groups on a V4.2 system, the YP service may not work if that V4.2 system is in a mixed YP server environment where
       there are both V4.2 and previous releases of YP servers.  Again, this incompatibility can only occur if a user's or root's group membership
       is increased to more than 8 groups.

Files
See Also
       passwd(1), setgroups(2), crypt(3), getgrent(3), initgroups(3x), passwd(5)
       Guide to the BIND/Hesiod Service
       Guide to the Yellow Pages Service

																	  group(5)

Check Out this Related Man Page

passwd(5)							File Formats Manual							 passwd(5)

Name
       passwd - password file

Description
       The file is an ASCII file that contains the following information for each user:

	      Login name
	      Password field
	      User ID
	      Group ID
	      User's real name, office, extension, home phone
	      Initial working directory
	      Program to use as Shell

       Each  line  in the file represents a user entry.  Each field within a user entry is separated from the next by a colon.	Each user entry is
       separated from the next by a new line.  If the password field is null, no password is demanded; if the Shell field is null, then is used.

       This file resides in directory Because the password, if present, is encrypted, the file has general read permission and can  be	used,  for
       example, to map user IDs to names.

       The  ``user's  real name'' can contain an ampersand (&), meaning insert the login name.	This information is set by the command and used by
       the command.

       Appropriate precautions must be taken to lock the file against changes if it is to be edited with a text editor.  The command does the nec-
       essary locking.

       If  the system is running UPGRADE security level and an asterisk appears in the password field, or if the system is running ENHANCED level,
       then the content of the password field is ignored and the password for the account is located in the authentication database. See  and  the
       Security Guide for Administrators for more information.

       The  files  and	if they exist, contain the hashed version of the file.	If present, they are used by the and functions to retrieve entries
       rapidly.  See for more information.

       The database can be distributed in a network by a naming service, such as Yellow Pages or BIND/Hesiod.  See the Guide to the  Yellow  Pages
       Service or the Guide to the BIND/Hesiod Service for setup information.

Restrictions
       The ``name'' can contain only lowercase ASCII characters a to z and the numbers 0 to 9.

Files
See Also
       chfn(1), finger(1), login(1), passwd(1), crypt(3), getpwent(3), auth(5), group(5), adduser(8), mkpasswd(8), vipw(8)
       Guide to the BIND/Hesiod Service
       Guide to the Yellow Pages Service
       Security Guide for Administrators

																	 passwd(5)
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