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'\" t
.\" Title: chgpasswd
.\" Author: Thomas K\(/loczko <kloczek@pld.org.pl>
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\" Date: 2024-06-21
.\" Manual: System Management Commands
.\" Source: shadow-utils 4.15.2
.\" Language: Chinese Simplified
.\"
.TH "CHGPASSWD" "8" "2024-06-21" "shadow\-utils 4\&.15\&.2" "System Management Commands"
.\" -----------------------------------------------------------------
.\" * 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"
chgpasswd \- 批量更新组密码
.SH "大纲"
.HP \w'\fBchgpasswd\fR\ 'u
\fBchgpasswd\fR [\fIoptions\fR]
.SH "描述"
.PP
The
\fBchgpasswd\fR
command reads a list of group name and password pairs from standard input and uses this information to update a set of existing groups\&. Each line is of the format:
.PP
\fIgroup_name\fR:\fIpassword\fR
.PP
By default the supplied password must be in clear\-text, and is encrypted by
\fBchgpasswd\fR\&.
.PP
The default encryption algorithm can be defined for the system with the
\fBENCRYPT_METHOD\fR
variable of
/etc/login\&.defs, and can be overwritten with the
\fB\-e\fR,
\fB\-m\fR, or
\fB\-c\fR
options\&.
.PP
此命令一般用于需要一次创建很多用户的大型系统。
.SH "选项"
.PP
The options which apply to the
\fBchgpasswd\fR
command are:
.PP
\fB\-c\fR, \fB\-\-crypt\-method\fR
.RS 4
使用指定的方法加密密码。
.sp
The available methods are
\fIDES\fR,
\fIMD5\fR, \fISHA256\fR, \fISHA512\fR
and
\fINONE\fR
if your libc supports these methods\&.
.RE
.PP
\fB\-e\fR, \fB\-\-encrypted\fR
.RS 4
提供的密码是已经加密了的
.RE
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
显示帮助信息并退出。
.RE
.PP
\fB\-m\fR, \fB\-\-md5\fR
.RS 4
如果提供的密码没有加密，则使用 MD5 加密而不是 DES。
.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\&. Only absolute paths are supported\&.
.RE
.PP
\fB\-s\fR, \fB\-\-sha\-rounds\fR
.RS 4
使用指定次数的轮转来加密密码。
.sp
You can only use this option with crypt method:
\fISHA256\fR \fISHA512\fR
.sp
By default, the number of rounds for SHA256 or SHA512 is defined by the SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS variables in
/etc/login\&.defs\&.
.sp
A minimal value of 1000 and a maximal value of 999,999,999 will be enforced for SHA256 and SHA512\&. The default number of rounds is 5000\&.
.RE
.SH "CAVEATS"
.PP
记住要设置权限或者掩码来阻止其它用户对未加密文件的读取。
.PP
您需要确保你吗和加密方法符合系统的密码策略。
.SH "配置文件"
.PP
The following configuration variables in
/etc/login\&.defs
change the behavior of this tool:
.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
.PP
/etc/login\&.defs
.RS 4
Shadow 密码套件配置。
.RE
.SH "参见"
.PP
\fBgpasswd\fR(1),
\fBgroupadd\fR(8),
\fBlogin.defs\fR(5)\&.
|
