chsh.1

pwdutils是一套密码管理工具

.\" -*- nroff -*-
.\" Copyright (C) 2002, 2003, 2004 Thorsten Kukuk
.\" Author: Thorsten Kukuk <[e-mail]>
.\"
.\" This program is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License version 2 as
.\" published by the Free Software Foundation.
.\"
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
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.\" along with this program; if not, write to the Free Software Foundation,
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.\"
.TH chsh 1 "February 2004" "pwdutils"
.SH NAME
chsh \- change login shell
.SH SYNOPSIS
.TP 5
\fBchsh\fR
[\fB-D \fIbinddn\fR] [\fB-P \fIpath\fR] [\fB-s \fIshell\fR] [\fB-l\fR] [\fB-q\fR] [\fB-u\fR] [\fB-v\fR] [\fIuser\fR]
.SH DESCRIPTION
\fBchsh\fR is used to change the user login shell.
A normal user may only change the login shell for their own account,
the super user may change the login shell for any account.
.PP
If a shell is not given on the command line, \fBchsh\fR operates in
an interactive fashion, prompting the user with the current login shell.
Enter the new value to change the field, or leave the line blank to use
the current value. Enter \fInone\fR to remove the current value.
The current value is displayed between a pair of \fB[ ]\fR marks.
.PP
The only restrictions placed on the login shell is that the
command name must be listed in \fI/etc/shells\fR, unless the
invoker is the super-user, and then any value may be added.
An account with a restricted login shell may not change
their login shell.
.PP
This version of \fBchsh\fR is able to change the shell of
local, NIS, NIS+ and LDAP accounts , if the permissions allow
it.
.SH OPTIONS
.TP
.BI "\-D, \-\-binddn" " binddn"
Use the Distinguished Name binddn to bind to the LDAP directory.
The user will be prompted for a password for simple authentication.
.TP
.BI "\-P, \-\-path" " path"
The \fIpasswd\fR file is located below the specified directory
path. \fBchsh\fR will use this files, not \fI/etc/passwd\fR.
This is useful for example on NIS master servers, where you do
not want to give all users in the NIS database automatic access
to your NIS server and the NIS map is build from special files.
.TP
.B "\-s, \-\-shell"
Specify your login shell.
.TP
.B "\-l, \-\-list-shells"
Print the list of shells listed in
.I /etc/shells
and exit.
.TP
.B "\-q, \-\-quite"
Don't be verbose.
.TP
.B "\-u, \-\-usage"
Print a usage message and exit.
.TP
.B "    \-\-help"
Print a more verbose help text and exit.
.TP
.B "-v, \-\-version"
Print version information and exit.
.SH FILES
/etc/passwd \- user account information
.br
/etc/shells \- list of valid login shells
.SH SEE ALSO
.BR chfn (1),
.BR passwd (5),
.BR shells (5)
.SH AUTHOR
Thorsten Kukuk <[e-mail]>