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OpenSolaris 2009.06 - man page for grpck (opensolaris section 1b)

grpck(1B)					     SunOS/BSD Compatibility Package Commands						 grpck(1B)

grpck - check group database entries
/etc/grpck [filename]
The grpck utility checks that a file in group(4) does not contain any errors; it checks the /etc/group file by default.
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+
groups(1), group(4), passwd(4), attributes(5)
Too many/few fields An entry in the group file does not have the proper number of fields. No group name The group name field of an entry is empty. Bad character(s) in group name The group name in an entry contains characters other than lower-case letters and digits. Invalid GID The group ID field in an entry is not numeric or is greater than 65535. Null login name A login name in the list of login names in an entry is null. Logname not found in password file A login name in the list of login names in an entry is not in the password file. Line too long A line (including the newline character) in the group file exceeds the maximum length of 512 characters. Duplicate logname entry A login name appears more than once in the list of login names for a group file entry. Out of memory The program cannot allocate memory in order to continue. Maximum groups exceeded for logname A login name's group membership exceeds the maximum, NGROUPS_MAX. SunOS 5.11 10 Jan 2000 grpck(1B)