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/groupand /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：

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/groupand /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

-r, --read-only

-R, --root CHROOT_DIR

-s, --sort

By default, grpck operates on /etc/groupand /etc/gshadow. The user may select alternate files with the groupand shadow parameters.

配置文件¶

The following configuration variables in /etc/login.defs change the behavior of this tool:

MAX_MEMBERS_PER_GROUP (number)

文件¶

/etc/group

/etc/gshadow

/etc/passwd

退出值¶

The grpck command exits with the following values:

0

1

2

3

4

5

参见¶

group(5), groupmod(8), gshadow(5),passwd(5), pwck(8), shadow(5).