GRPCK(8) 系统管理命令 GRPCK(8)
名称
grpck - 检查组文件的完整性
大纲
grpck [选项] [group [ shadow ]]
描述
The grpck command verifies the integrity of the groups information. It
checks that all entries in /etc/group and /etc/gshadow have the proper
format and contain valid data. The user is prompted to delete entries
that are improperly formatted or which have other uncorrectable errors.
检查的项目有：
• 正确的字段数
• 一个唯一且有效的组名
• a valid group identifier (/etc/group only)
• a valid list of members and administrators
• a corresponding entry in the /etc/gshadow file (respectively
/etc/group for the gshadow checks)
The checks for correct number of fields and unique group name are
fatal. If an 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 groupmod command to correct the error.
The commands which operate on the /etc/group and /etc/gshadow files are
not able to alter corrupted or duplicated entries. grpck should be
used in those circumstances to remove the offending entries.
选项
The -r and -s options cannot be combined.
The options which apply to the grpck command are:
-h, --help
显示帮助信息并退出。
-r, --read-only
Execute the grpck command in read-only mode. This causes all
questions regarding changes to be answered no without user
intervention.
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration
files from the CHROOT_DIR directory. Only absolute paths are
supported.
-s, --sort
Sort entries in /etc/group and /etc/gshadow by GID.
-S, --silence-warnings
Suppress more controversial warnings, in particular warnings about
inconsistency between group members listed in /etc/group and
/etc/ghadow.
By default, grpck operates on /etc/group and /etc/gshadow. The user may
select alternate files with the group and shadow parameters.
配置文件
The following configuration variables in /etc/login.defs change the
behavior of this tool:
文件
/etc/group
组账户信息。
/etc/gshadow
安全组账户信息。
/etc/passwd
用户账户信息。
退出值
The grpck command exits with the following values:
0
success
1
invalid command syntax
2
one or more bad group entries
3
can't open group files
4
can't lock group files
5
can't update group files
参见
group(5), groupmod(8), gshadow(5), passwd(5), pwck(8), shadow(5).
shadow-utils 4.13 2023-03-23 GRPCK(8)
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