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Annotation of 43BSDTahoe/man/man1/passwd.1, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)passwd.1    6.4 (Berkeley) 6/5/86
        !             6: .\"
        !             7: .TH PASSWD 1 "June 5, 1986"
        !             8: .UC 4
        !             9: .SH NAME
        !            10: chfn, chsh, passwd \- change password file information
        !            11: .SH SYNOPSIS
        !            12: .B passwd
        !            13: [
        !            14: .B \-f
        !            15: ] [
        !            16: .B \-s
        !            17: ] [ name ]
        !            18: .SH DESCRIPTION
        !            19: This command changes (or installs)
        !            20: a password, login shell
        !            21: .RB ( \-s
        !            22: option), or GECOS information field
        !            23: .RB ( \-f
        !            24: option)
        !            25: associated with the user
        !            26: .IR name
        !            27: (your own name by default).
        !            28: .PP
        !            29: When altering a password,
        !            30: the program prompts for the current password and then for the new one.
        !            31: The caller must supply both.
        !            32: The new password must be typed twice to forestall mistakes.
        !            33: .PP
        !            34: New passwords must be at least four characters long if they use
        !            35: a sufficiently rich alphabet and at least six characters long
        !            36: if monocase.
        !            37: These rules are relaxed if you are insistent enough.
        !            38: .PP
        !            39: Only the owner of the name or the super-user may change a password;
        !            40: the owner must prove he knows the old password.
        !            41: .PP
        !            42: When altering a login shell,
        !            43: .I passwd
        !            44: displays the current login shell and then prompts
        !            45: for the new one.
        !            46: The new login shell must be one of the approved shells
        !            47: listed in
        !            48: .I /etc/shells
        !            49: unless you are the super-user.
        !            50: If
        !            51: .I /etc/shells
        !            52: does not exist, the only shells that may be specified are
        !            53: .I /bin/sh
        !            54: and
        !            55: .IR /bin/csh .
        !            56: .PP
        !            57: The super-user may change anyone's login shell; normal users
        !            58: may only change their own login shell.
        !            59: .PP
        !            60: When altering the GECOS information field,
        !            61: .I passwd
        !            62: displays the current information, broken into
        !            63: fields, as interpreted by the
        !            64: .IR finger (1)
        !            65: program, among others, and prompts for new values.
        !            66: These fields include a user's
        !            67: ``real life'' name, office room number,
        !            68: office phone number, and home phone number.
        !            69: Included in each prompt is a default value,
        !            70: which is enclosed between brackets.
        !            71: The default value is accepted simply by typing a carriage
        !            72: return.  To enter a blank field, the word ``none'' may
        !            73: be typed.  Below is a sample run:
        !            74: .IP
        !            75: .B "Name [Biff Studsworth II]:"
        !            76: .br
        !            77: .B "Room number (Exs: 597E or 197C) []:"
        !            78: 521E
        !            79: .br
        !            80: .B "Office Phone (Ex: 1632) []:"
        !            81: 1863
        !            82: .br
        !            83: .B "Home Phone (Ex: 987532) [5771546]:"
        !            84: none
        !            85: .sp
        !            86: .PP
        !            87: .I Passwd
        !            88: allows phone numbers to be entered with or without hyphens.
        !            89: It is a good idea to run
        !            90: .I finger
        !            91: after changing the GECOS information
        !            92: to make sure everything is setup properly.
        !            93: .PP
        !            94: The super-user may change anyone's GECOS information; normal
        !            95: users may only change their own.
        !            96: .SH FILES
        !            97: /etc/passwd    The file containing all of this information
        !            98: .br
        !            99: /etc/shells    The list of approved shells
        !           100: .SH "SEE ALSO"
        !           101: login(1), finger(1), passwd(5), crypt(3)
        !           102: .br
        !           103: Robert Morris and Ken Thompson,
        !           104: .I UNIX password security

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