245 lines
6.4 KiB
Groff
245 lines
6.4 KiB
Groff
.\" Copyright (c) 1995-1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 9, 1995
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.Dt ADDUSER 8
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.Os
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.Sh NAME
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.Nm adduser
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.Nd command for adding new users
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.Sh SYNOPSIS
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.Nm
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.Bk -words
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.Op Fl check_only
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.Op Fl class Ar login_class
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.Op Fl config_create
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.Op Fl dotdir Ar dotdir
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.Op Fl group Ar login_group
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.Op Fl h | help
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.Op Fl home Ar home
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.Op Fl message Ar message_file
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.Op Fl noconfig
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.Op Fl shell Ar shell
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.Op Fl s | silent | q | quiet
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.Op Fl uid Ar uid_start
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.Op Fl v | verbose
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.Ek
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.Sh DESCRIPTION
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The
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.Nm
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utility is a simple program for adding new users. It checks
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the passwd, group and shell databases.
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It creates passwd/group entries,
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.Ev HOME
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directory, dotfiles and sends the new user a welcome message.
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.Sh RESTRICTIONS
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.Bl -tag -width Ds -compact
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.It Sy username
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Login name.
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May contain only lowercase characters or digits.
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Maximum length
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is 16 characters (see
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.Xr setlogin 2
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BUGS section).
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The reasons for this limit are "Historical".
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Given that people have traditionally wanted to break this
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limit for aesthetic reasons, it's never been of great importance to break
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such a basic fundamental parameter in UNIX.
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You can change
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.Dv UT_NAMESIZE
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in
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.Pa /usr/include/utmp.h
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and recompile the
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world; people have done this and it works, but you will have problems
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with any precompiled programs, or source that assumes the 8-character
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name limit and NIS.
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The NIS protocol mandates an 8-character username.
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If you need a longer login name for e-mail addresses,
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you can define an alias in
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.Pa /etc/mail/aliases .
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.It Sy fullname
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Firstname and surname.
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The
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.Ql Pa \&:
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character is not allowed.
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.It Sy shell
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Only valid shells from the shell database or sliplogin and pppd
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.It Sy uid
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Automatically generated or your choice, must be less than 32000.
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.It Sy gid/login group
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Your choice or automatically generated.
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.It Sy password
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If not empty, password is encoded with
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.Xr crypt 3 .
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.El
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.Sh UNIQUE GROUPS
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Perhaps you're missing what
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.Em can
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be done with this scheme that falls apart
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with most other schemes. With each user in his/her own group the user can
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safely run with a umask of 002 and have files created in their home directory
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and not worry about others being able to read them.
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.Pp
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For a shared area you create a separate uid/gid (like cvs or ncvs on freefall),
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you place each person that should be able to access this area into that new
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group.
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.Pp
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This model of uid/gid administration allows far greater flexibility than lumping
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users into groups and having to muck with the umask when working in a shared
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area.
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.Pp
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I have been using this model for almost 10 years and found that it works
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for most situations, and has never gotten in the way. (Rod Grimes)
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.Sh CONFIGURATION
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.Bl -enum
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.It
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Read internal variables.
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.It
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Read configuration file (/etc/adduser.conf).
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.It
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Parse command line options.
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.El
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.Sh OPTIONS
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.Bl -tag -width Ds
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.It Fl check_only
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Check /etc/passwd, /etc/group, /etc/shells and exit.
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.It Fl class Ar login_class
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Set default login class.
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.It Fl config_create
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Create new configuration and message file and exit.
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.It Fl dotdir Ar directory
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Copy files from
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.Ar directory
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into the
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.Ev HOME
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directory of new users,
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.Ql Pa dot.foo
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will be renamed to
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.Ql Pa .foo .
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Don't copy files if
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.Ar directory
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specified is equal to
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.Ar no .
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For security make all files writable and readable for owner,
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don't allow group or world to write files and allow only owner
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to read/execute/write
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.Pa .rhost ,
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.Pa .Xauthority ,
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.Pa .kermrc ,
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.Pa .netrc ,
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.Pa Mail ,
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.Pa prv ,
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.Pa iscreen ,
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.Pa term .
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.It Fl group Ar login_group
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Login group.
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.Ar USER
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means that the username is to be used as login group.
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.It Fl help , h , \&?
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Print a summary of options and exit.
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.It Fl home Ar partition
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Default home partition where all users located.
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.It Fl message Ar file
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Send new users a welcome message from
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.Ar file .
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Specifying a value of
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.Ar no
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for
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.Ar file
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causes no message to be sent to new users.
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.It Fl noconfig
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Do not read the default configuration file.
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.It Fl shell Ar shell
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Default shell for new users.
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.It Fl silent , s , quiet , q
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Few warnings, questions, bug reports.
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.It Fl uid Ar uid
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Use uid's from
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.Ar uid
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on up.
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.It Fl verbose , v
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Many warnings, questions.
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Recommended for novice users.
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.El
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.Sh FORMATS
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.Bl -tag -width Ds -compact
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.Ql Pa #
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is a comment.
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.It Sy configuration file
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The
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.Nm
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utility reads and writes this file.
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See
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.Pa /etc/adduser.conf
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for more details.
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.It Sy message file
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Eval variables in this file.
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See
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.Pa /etc/adduser.message
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for more
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details.
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.El
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.Sh FILES
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.Bl -tag -width /etc/master.passwdxx -compact
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.It Pa /etc/master.passwd
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user database
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.It Pa /etc/group
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group database
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.It Pa /etc/shells
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shell database
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.It Pa /etc/login.conf
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login classes database
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.It Pa /etc/adduser.conf
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configuration file for adduser
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.It Pa /etc/adduser.message
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message file for adduser
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.It Pa /usr/share/skel
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skeletal login directory
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.It Pa /var/log/adduser
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logfile for adduser
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.El
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.Sh SEE ALSO
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.Xr chpass 1 ,
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.Xr finger 1 ,
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.Xr passwd 1 ,
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.Xr setlogin 2 ,
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.Xr aliases 5 ,
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.Xr group 5 ,
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.Xr login.conf 5 ,
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.Xr passwd 5 ,
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.Xr shells 5 ,
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.Xr pw 8 ,
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.Xr pwd_mkdb 8 ,
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.Xr rmuser 8 ,
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.Xr vipw 8 ,
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.Xr yp 8
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.\" .Sh BUGS
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.Sh HISTORY
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The
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.Nm
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utility appeared in
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.Fx 2.1 .
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