pwck(1M)						  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 verification includes a check of the number of fields, group name,  group  ID,  whether
       any  login  names belong to more than NGROUPS_MAX 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 commands, 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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE 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							    27 Aug 2008 							  pwck(1M)