Provided by: passwd_4.1.4.2-1ubuntu3_i386 bug

CONFIGURATION
       The following configuration variables in /etc/login.defs change the
       behavior of this tool:

       PASS_MAX_DAYS (number)
               .     ,      .    ,    -1 (     ).

       PASS_MIN_DAYS (number)
                .         .    ,    -1 (     ).

       PASS_WARN_AGE (number)
                    .   ,      ,       .    ,   .

       /etc/group

       /etc/passwd

       /etc/shadow

       pwck
        ,   :

       0

       1

       2

       3

       4

       5

       6
           cant sort password files

       group(5), grpck(8), passwd(5), shadow(5), usermod(8).

                                  09/03/2010                           pwck(8)