passwd.tproj/passwd.1

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  32 .\"     @(#)passwd.1    8.1 (Berkeley) 6/6/93
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  34 .Dd June 6, 1993
  35 .Dt PASSWD 1
  36 .Os BSD 4
  37 .Sh NAME
  38 .Nm passwd
  39 .Nd modify a user's password
  40 .Sh SYNOPSIS
  41 .Nm passwd
  42 .Op Fl i Ar infosystem
  43 .Op Fl l Ar location
  44 .Op Ar name
  45 .Sh DESCRIPTION
  46 .Nm Passwd
  47 changes the user's password.  First, the user is prompted for their
  48 current password.
  49 If the current password is correctly typed, a new password is
  50 requested.
  51 The new password must be entered twice to avoid typing errors.
  52 .Pp
  53 The new password should be at least six characters long and not
  54 purely alphabetic.
  55 Its total length should be less than
  56 .Dv _PASSWORD_LEN
  57 (currently 128 characters) although some infosystems allow longer passwords.
  58 Numbers, upper case letters and meta characters
  59 are encouraged.
  60 .Pp
  61 Once the password has been verified,
  62 .Nm passwd
  63 communicates the new password information to
  64 the authenticating host.
  65 .Bl -tag -width flag
  66 .It Fl i Ar infosystem
  67 This option specifies where the password update should be applied.
  68 Under Mac OS X 10.3, supported infosystems are:
  69 .Bl -tag -width flag
  70 .It Ar netinfo
  71 (default)
  72 The netinfo database containing the user's password.
  73 If no -l option is specified, the local netinfo database is assumed.
  74 .It Ar file
  75 The local flat-files (included for legacy configurations).
  76 .It Ar nis
  77 A remote NIS server containing the user's password.
  78 .It Ar opendirectory
  79 A system conforming to opendirectory APIs and supporting updates (including LDAP, netinfo, etc).
  80 .El
  81 .It Fl l Ar location
  82 This option causes the password to be updated in the given location of the choosen infosystem.
  83 When changing only the local password,
  84 .Xr pwd_mkdb  8
  85 is used to update the password databases.
  86 .Bl -tag -width flag
  87 .It for netinfo,
  88 location may be a domain name or server/tag
  89 .It for file,
  90 location may be a file name (/etc/master.passwd is the default)
  91 .It for nis,
  92 location may be a NIS domainname
  93 .It for opendirectory,
  94 location may be a directory node name
  95 .Bl
  96 .El
  97 .Pp
  98 The super-user privilages are not required change a user's current password
  99 if only the local password is modified.
 100 .Sh FILES
 101 .Bl -tag -width /etc/master.passwd -compact
 102 .It Pa /etc/master.passwd
 103 The user database
 104 .It Pa /etc/passwd
 105 A Version 7 format password file
 106 .It Pa /etc/passwd.XXXXXX
 107 Temporary copy of the password file
 108 .El
 109 .Sh SEE ALSO
 110 .Xr chpass 1 ,
 111 .Xr login 1 ,
 112 .Xr passwd 5 ,
 113 .Xr pwd_mkdb 8 ,
 114 .Xr vipw 8,
 115 .Xr nicl 1
 116 .Rs
 117 .%A Robert Morris
 118 .%A Ken Thompson
 119 .%T "UNIX password security"
 120 .Re
 121 .Sh HISTORY
 122 A
 123 .Nm passwd
 124 command appeared in
 125 .At v6 .