whats ‘mkuser.default’ File?

It’s a linux file which contains the default attributes for new users.   Its directory path is ‘/usr/lib/security/mkuser.default’. This file is part of Base Operating System (BOS) Runtime. This is an ASCII file that contains user stanzas. These stanzas have attribute default values for users created by the mkuser command. Each attribute has the Attribute=Value form. If an attribute has a value of $USER, the mkuser command substitutes the name of the user. The end of each attribute pair and stanza is marked by a new-line character.

There are two stanzas, user and admin, that can contain all defined attributes except the id and admin attributes. The mkuser command generates a unique id attribute. The admin attribute depends on whether the -a flag is used with the mkuser command. For examples:A typical user stanza looks like the following:

user:

   pgroup = staff

   groups = staff

   shell = /usr/bin/ksh

   home = /home/$USER

   auth1 = SYSTEM