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.\" Generator: DocBook XSL Stylesheets v1.73.2 <http://docbook.sf.net/>
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.\" Manual: System Management Commands
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.\" Source: System Management Commands
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.TH "GRPCK" "8" "04/03/2008" "System Management Commands" "System Management Commands"
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.TH "GRPCK" "8" "04/15/2009" "System Management Commands" "System Management Commands"
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command verifies the integrity of the system authentication information\. All entries in
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command verifies the integrity of the system authentication information\&. All entries in
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and \fI/etc/gshadow\fR
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are checked to see that the entry has the proper format and valid data in each field\. The user is prompted to delete entries that are improperly formatted or which have other uncorrectable errors\.
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are checked to see that the entry has the proper format and valid data in each field\&. The user is prompted to delete entries that are improperly formatted or which have other uncorrectable errors\&.
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Checks are made to verify that each entry has:
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\h'-04'\(bu\h'+03'a valid list of members and administrators
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The checks for correct number of fields and unique group name are fatal\. If the entry has the wrong number of fields, the user will be prompted to delete the entire line\. If the user does not answer affirmatively, all further checks are bypassed\. An entry with a duplicated group name is prompted for deletion, but the remaining checks will still be made\. All other errors are warnings and the user is encouraged to run the
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The checks for correct number of fields and unique group name are fatal\&. If the entry has the wrong number of fields, the user will be prompted to delete the entire line\&. If the user does not answer affirmatively, all further checks are bypassed\&. An entry with a duplicated group name is prompted for deletion, but the remaining checks will still be made\&. All other errors are warnings and the user is encouraged to run the
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command to correct the error\.
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command to correct the error\&.
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The commands which operate on the
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file are not able to alter corrupted or duplicated entries\.
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file are not able to alter corrupted or duplicated entries\&.
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should be used in those circumstances to remove the offending entry\.
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should be used in those circumstances to remove the offending entry\&.
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The options which apply to the
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command in read\-only mode\. This causes all questions regarding changes to be answered
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command in read\-only mode\&. This causes all questions regarding changes to be answered
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without user intervention\.
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without user intervention\&.
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and \fI/etc/gshadow\fR
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\fI/etc/group\fRand \fI/etc/gshadow\fR\. The user may select alternate files with the
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\fI/etc/group\fRand \fI/etc/gshadow\fR\&. The user may select alternate files with the
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and \fIshadow\fR parameters\.
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and \fIshadow\fR parameters\&.
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.SH "CONFIGURATION"
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The following configuration variables in
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\fI/etc/login\.defs\fR
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\fI/etc/login\&.defs\fR
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change the behavior of this tool:
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\fBMAX_MEMBERS_PER_GROUP\fR (number)
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Maximum members per group entry\. When the maximum is reached, a new group entry (line) is started in
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Maximum members per group entry\&. When the maximum is reached, a new group entry (line) is started in
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(with the same name, same password, and same GID)\.
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The default value is 0, meaning that there are no limits in the number of members in a group\.
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This feature (split group) permits to limit the length of lines in the group file\. This is useful to make sure that lines for NIS groups are not larger than 1024 characters\.
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If you need to enforce such limit, you can use 25\.
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Note: split groups may not be supported by all tools (even in the Shadow toolsuite\. You should not use this variable unless you really need it\.
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(with the same name, same password, and same GID)\&.
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The default value is 0, meaning that there are no limits in the number of members in a group\&.
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This feature (split group) permits to limit the length of lines in the group file\&. This is useful to make sure that lines for NIS groups are not larger than 1024 characters\&.
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If you need to enforce such limit, you can use 25\&.
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Note: split groups may not be supported by all tools (even in the Shadow toolsuite)\&. You should not use this variable unless you really need it\&.
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Group account information\.
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Group account information\&.
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\fI/etc/gshadow\fR
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Secure group account information\.
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Secure group account information\&.
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\fI/etc/passwd\fR
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User account information\.
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User account information\&.
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.SH "EXIT VALUES"
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man/grpck.8
