'\" t
.\"     Title: chsh
.\"    Author: Julianne Frances Haugh
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2024-02-04
.\"    Manual: 用户命令
.\"    Source: shadow-utils 4.13
.\"  Language: Chinese Simplified
.\"
.TH "CHSH" "1" "2024-02-04" "shadow\-utils 4\&.13" "用户命令"
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.SH "名称"
chsh \- 更改登录 shell
.SH "大纲"
.HP \w'\fBchsh\fR\ 'u
\fBchsh\fR [\fI选项\fR] [\fI登录\fR]
.SH "描述"
.PP
The
\fBchsh\fR
command changes the user login shell\&. This determines the name of the user\*(Aqs initial login command\&. A normal user may only change the login shell for her own account; the superuser may change the login shell for any account\&.
.SH "选项"
.PP
The options which apply to the
\fBchsh\fR
command are:
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
显示帮助信息并退出。
.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\-\-shell\fR\ \&\fISHELL\fR
.RS 4
用户的新登录 shell 的名称。将此字段设置为空会让系统选择默认的登录 shell。
.RE
.PP
If the
\fB\-s\fR
option is not selected,
\fBchsh\fR
operates in an interactive fashion, prompting the user with the current login shell\&. Enter the new value to change the shell, or leave the line blank to use the current one\&. The current shell is displayed between a pair of
\fI[ ]\fR
marks\&.
.SH "注意"
.PP
The only restriction placed on the login shell is that the command name must be listed in
/etc/shells, unless the invoker is the superuser, and then any value may be added\&. An account with a restricted login shell may not change her login shell\&. For this reason, placing
/bin/rsh
in
/etc/shells
is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell back to its original value\&.
.SH "文件"
.PP
/etc/passwd
.RS 4
用户账户信息。
.RE
.PP
/etc/shells
.RS 4
可用的登录 shell 的列表。
.RE
.PP
/etc/login\&.defs
.RS 4
Shadow 密码套件配置。
.RE
.SH "参见"
.PP
\fBchfn\fR(1),
\fBlogin.defs\fR(5),
\fBpasswd\fR(5)\&.