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+'\" t
+.\" Title: groupmems
+.\" Author: George Kraft, IV
+.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
+.\" Date: 2014-05-09
+.\" Manual: 系统管理命令
+.\" Source: shadow-utils 4.2
+.\" Language: Chinese Simplified
+.\"
+.TH "GROUPMEMS" "8" "2014-05-09" "shadow\-utils 4\&.2" "系统管理命令"
+.\" -----------------------------------------------------------------
+.\" * Define some portability stuff
+.\" -----------------------------------------------------------------
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.\" http://bugs.debian.org/507673
+.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
+.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\" -----------------------------------------------------------------
+.\" * set default formatting
+.\" -----------------------------------------------------------------
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.\" -----------------------------------------------------------------
+.\" * MAIN CONTENT STARTS HERE *
+.\" -----------------------------------------------------------------
+.SH "名称"
+groupmems \- 用户主组的管理员成员
+.SH "大纲"
+.HP \w'\fBgroupmems\fR\ 'u
+\fBgroupmems\fR \-a\ \fIuser_name\fR | \-d\ \fIuser_name\fR | [\-g\ \fIgroup_name\fR] | \-l | \-p
+.SH "描述"
+.PP
+The
+\fBgroupmems\fR
+command allows a user to administer his/her own group membership list without the requirement of superuser privileges\&. The
+\fBgroupmems\fR
+utility is for systems that configure its users to be in their own name sake primary group (i\&.e\&., guest / guest)\&.
+.PP
+Only the superuser, as administrator, can use
+\fBgroupmems\fR
+to alter the memberships of other groups\&.
+.SH "选项"
+.PP
+\fBgroupmems\fR
+命令可以接受的选项有:
+.PP
+\fB\-a\fR, \fB\-\-add\fR\ \&\fIuser_name\fR
+.RS 4
+将一个用户添加到组成员列表。
+.sp
+If the
+/etc/gshadow
+file exist, and the group has no entry in the
+/etc/gshadow
+file, a new entry will be created\&.
+.RE
+.PP
+\fB\-d\fR, \fB\-\-delete\fR\ \&\fIuser_name\fR
+.RS 4
+从组成员列表中删除用户。
+.sp
+如果
+/etc/gshadow
+文件存在,用户将会被从组成员和管理员中移除。
+.sp
+If the
+/etc/gshadow
+file exist, and the group has no entry in the
+/etc/gshadow
+file, a new entry will be created\&.
+.RE
+.PP
+\fB\-g\fR, \fB\-\-group\fR\ \&\fIgroup_name\fR
+.RS 4
+超级用户可以指定修改哪个组的组成员列表。
+.RE
+.PP
+\fB\-h\fR, \fB\-\-help\fR
+.RS 4
+现实帮助信息并退出。
+.RE
+.PP
+\fB\-l\fR, \fB\-\-list\fR
+.RS 4
+列出组成员。
+.RE
+.PP
+\fB\-p\fR, \fB\-\-purge\fR
+.RS 4
+从组成员列表中删除所有用户。
+.sp
+If the
+/etc/gshadow
+file exist, and the group has no entry in the
+/etc/gshadow
+file, a new entry will be created\&.
+.RE
+.PP
+\fB\-R\fR, \fB\-\-root\fR\ \&\fICHROOT_DIR\fR
+.RS 4
+Apply changes in the
+\fICHROOT_DIR\fR
+directory and use the configuration files from the
+\fICHROOT_DIR\fR
+directory\&.
+.RE
+.SH "SETUP"
+.PP
+The
+\fBgroupmems\fR
+executable should be in mode
+2770
+as user
+\fIroot\fR
+and in group
+\fIgroups\fR\&. The system administrator can add users to group
+\fIgroups\fR
+to allow or disallow them using the
+\fBgroupmems\fR
+utility to manage their own group membership list\&.
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+ $ groupadd \-r groups
+ $ chmod 2770 groupmems
+ $ chown root\&.groups groupmems
+ $ groupmems \-g groups \-a gk4
+
+.fi
+.if n \{\
+.RE
+.\}
+.SH "配置文件"
+.PP
+在
+/etc/login\&.defs
+中有如下配置变量,可以用来更改此工具的行为:
+.PP
+\fBMAX_MEMBERS_PER_GROUP\fR (number)
+.RS 4
+每个组条目的最大成员数。达到最大值时,在
+/etc/group
+开始一个新条目(行)(使用同样的名称,同样的密码,同样的 GID)。
+.sp
+默认值是 0,意味着组中的成员数没有限制。
+.sp
+此功能(分割组)允许限制组文件中的行长度。这对于确保 NIS 组的行比长于 1024 字符。
+.sp
+如果要强制这个限制,可以使用 25。
+.sp
+注意:分割组可能不受所有工具的支持(甚至在 Shadow 工具集中)。您不应该使用这个变量,除非真的需要。
+.RE
+.SH "文件"
+.PP
+/etc/group
+.RS 4
+组账户信息。
+.RE
+.PP
+/etc/gshadow
+.RS 4
+安全组账户信息
+.RE
+.SH "参见"
+.PP
+\fBchfn\fR(1),
+\fBchsh\fR(1),
+\fBpasswd\fR(1),
+\fBgroupadd\fR(8),
+\fBgroupdel\fR(8),
+\fBuseradd\fR(8),
+\fBuserdel\fR(8),
+\fBusermod\fR(8)\&.