System Administration Commands                           pwck(1M)



NAME
     pwck, grpck - password/group file checkers

SYNOPSIS
     /usr/sbin/pwck [filename]


     /usr/sbin/grpck [filename]


DESCRIPTION
     pwck scans the password file and notes any  inconsistencies.
     The checks include validation of the number of fields, login
     name, user ID, group ID, and whether the login directory and
     the  program-to-use-as-shell  exist.   The  default password
     file is /etc/passwd.


     grpck  verifies all entries in the group file. This  verifi-
     cation includes a check of the number of fields, group name,
     group ID, whether  any  login  names  belong  to  more  than
     NGROUPSMAX  groups,  and that all login names appear in the
     password file. grpck also issues a warning if  it  finds  an
     entry  (a  single  line) in the group file longer than  2047
     characters.  Such an entry  causes  group  maintenance  com-
     mands, such as groupdel(1M) and groupmod(1M), to fail.


     The default group file is /etc/group.


     All messages regarding inconsistent entries  are  placed  on
     the stderr stream.

FILES
         o    /etc/group

         o    /etc/passwd

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:













SunOS 5.11          Last change: 27 Aug 2008                    1






System Administration Commands                           pwck(1M)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWcsu                     
    


SEE ALSO
     groupdel(1M),    groupmod(1M),    getpwent(3C),    group(4),
     passwd(4), attributes(5)

DIAGNOSTICS
     Group entries in /etc/group with no login names are flagged.

     Group file 'filename' is empty

         The /etc/passwd or /etc/group file is an empty file.


     cannot open file filename: No such file or directory

         The /etc/passwd or /etc/group file does not exist.


NOTES
     If no filename argument is given,  grpck  checks  the  local
     group  file,  /etc/group, and also makes sure that all login
     names encountered in the checked group file are known to the
     system   getpwent(3C)  routine.   This  means that the login
     names may be supplied by a network name service.

























SunOS 5.11          Last change: 27 Aug 2008                    2