path: root/man/zh_CN/man8/pwck.8

'\" t
.\"     Title: pwck
.\"    Author: Julianne Frances Haugh
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 2020-01-23
.\"    Manual: 系统管理命令
.\"    Source: shadow-utils 4.8.1
.\"  Language: Chinese Simplified
.\"
.TH "PWCK" "8" "2020-01-23" "shadow\-utils 4\&.8\&.1" "系统管理命令"
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.SH "名称"
pwck \- 检查密码文件的完整性
.SH "大纲"
.HP \w'\fBpwck\fR\ 'u
\fBpwck\fR [选项] [\fIpasswd\fR\ [\ \fIshadow\fR\ ]]
.SH "描述"
.PP
The
\fBpwck\fR
command verifies the integrity of the users and authentication information\&. It checks that all entries in
/etc/passwd
and
/etc/shadow
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\&.
.PP
检查的项目有：
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
正确的字段数
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
一个唯一且有效的用户名
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
一个有效的用户和组标识符
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
有效的主组
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
有效的主目录
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
有效的登录 shell
.RE
.PP
shadow
checks are enabled when a second file parameter is specified or when
/etc/shadow
exists on the system\&.
.PP
这些检查是：
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
每个密码项都有对应的影子相，反之亦然。
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
密码在影子化了的文件中指定
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
影子项有正确的字段数。
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
影子项在影子文件中是唯一的
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
最后一次的密码更改时间不是被设成了一个将来的时间。
.RE
.PP
The checks for correct number of fields and unique user 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 user name is prompted for deletion, but the remaining checks will still be made\&. All other errors are warning and the user is encouraged to run the
\fBusermod\fR
command to correct the error\&.
.PP
The commands which operate on the
/etc/passwd
file are not able to alter corrupted or duplicated entries\&.
\fBpwck\fR
should be used in those circumstances to remove the offending entry\&.
.SH "选项"
.PP
The
\fB\-r\fR
and
\fB\-s\fR
options cannot be combined\&.
.PP
The options which apply to the
\fBpwck\fR
command are:
.PP
\fB\-\-badname\fR\ \&
.RS 4
Allow names that do not conform to standards\&.
.RE
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
现实帮助信息并退出。
.RE
.PP
\fB\-q\fR, \fB\-\-quiet\fR
.RS 4
只报告错误。不显示那些不需要用户操作的警告。
.RE
.PP
\fB\-r\fR, \fB\-\-read\-only\fR
.RS 4
Execute the
\fBpwck\fR
command in read\-only mode\&.
.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
.PP
\fB\-s\fR, \fB\-\-sort\fR
.RS 4
Sort entries in
/etc/passwd
and
/etc/shadow
by UID\&.
.RE
.PP
By default,
\fBpwck\fR
operates on the files
/etc/passwd
and
/etc/shadow\&. The user may select alternate files with the
\fIpasswd\fR
and
\fIshadow\fR
parameters\&.
.SH "配置文件"
.PP
The following configuration variables in
/etc/login\&.defs
change the behavior of this tool:
.PP
\fBPASS_MAX_DAYS\fR (number)
.RS 4
一个密码可以使用的最大天数。如果密码比这旧，将会强迫更改密码。如果不指定，就假定为 \-1，这会禁用这个限制。
.RE
.PP
\fBPASS_MIN_DAYS\fR (number)
.RS 4
两次更改密码时间的最小间隔。将会拒绝任何早于此的更改密码的尝试。如果不指定，假定为 \-1，将会禁用这个限制。
.RE
.PP
\fBPASS_WARN_AGE\fR (number)
.RS 4
密码过期之前给出警告的天数。0 表示只有只在过期的当天警告，负值表示不警告。如果没有指定，不会给警告。
.RE
.SH "文件"
.PP
/etc/group
.RS 4
组账户信息。
.RE
.PP
/etc/passwd
.RS 4
用户账户信息。
.RE
.PP
/etc/shadow
.RS 4
安全用户账户信息。
.RE
.SH "退出值"
.PP
The
\fBpwck\fR
command exits with the following values:
.PP
\fI0\fR
.RS 4
success
.RE
.PP
\fI1\fR
.RS 4
invalid command syntax
.RE
.PP
\fI2\fR
.RS 4
one or more bad password entries
.RE
.PP
\fI3\fR
.RS 4
can\*(Aqt open password files
.RE
.PP
\fI4\fR
.RS 4
can\*(Aqt lock password files
.RE
.PP
\fI5\fR
.RS 4
can\*(Aqt update password files
.RE
.PP
\fI6\fR
.RS 4
can\*(Aqt sort password files
.RE
.SH "参见"
.PP
\fBgroup\fR(5),
\fBgrpck\fR(8),
\fBpasswd\fR(5),
\fBshadow\fR(5),
\fBusermod\fR(8)\&.