id/id.1

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  35 .\"     @(#)id.1        8.1 (Berkeley) 6/6/93
  36 .\" $FreeBSD: src/usr.bin/id/id.1,v 1.18 2006/09/26 22:28:12 ceri Exp $
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  38 .Dd September 26, 2006
  39 .Dt ID 1
  40 .Os
  41 .Sh NAME
  42 .Nm id
  43 .Nd return user identity
  44 .Sh SYNOPSIS
  45 .Nm
  46 .Op Ar user
  47 .Nm
  48 .Fl A
  49 .Nm
  50 .Fl F
  51 .Op Ar user
  52 .Nm
  53 .Fl G Op Fl n
  54 .Op Ar user
  55 .Nm
  56 .Fl M
  57 .Nm
  58 .Fl P
  59 .Op Ar user
  60 .Nm
  61 .Fl g Op Fl nr
  62 .Op Ar user
  63 .Nm
  64 .Fl p
  65 .Op Ar user
  66 .Nm
  67 .Fl u Op Fl nr
  68 .Op Ar user
  69 .Sh DESCRIPTION
  70 The
  71 .Nm
  72 utility displays the user and group names and numeric IDs, of the
  73 calling process, to the standard output.
  74 If the real and effective IDs are different, both are displayed,
  75 otherwise only the real ID is displayed.
  76 .Pp
  77 If a
  78 .Ar user
  79 (login name or user ID)
  80 is specified, the user and group IDs of that user are displayed.
  81 In this case, the real and effective IDs are assumed to be the same.
  82 .Pp
  83 The options are as follows:
  84 .Bl -tag -width indent
  85 .It Fl A
  86 Display the process audit user ID and other process audit properties, which
  87 requires privilege.
  88 .It Fl F
  89 Display the full name of the user.
  90 .It Fl G
  91 Display the different group IDs (effective, real and supplementary)
  92 as white-space separated numbers, in no particular order.
  93 .It Fl M
  94 Display the MAC label of the current process.
  95 .It Fl P
  96 Display the id as a password file entry.
  97 .It Fl a
  98 Ignored for compatibility with other
  99 .Nm
 100 implementations.
 101 .It Fl g
 102 Display the effective group ID as a number.
 103 .It Fl n
 104 Display the name of the user or group ID for the
 105 .Fl G ,
 106 .Fl g
 107 and
 108 .Fl u
 109 options instead of the number.
 110 If any of the ID numbers cannot be mapped into names, the number will be
 111 displayed as usual.
 112 .It Fl p
 113 Make the output human-readable.
 114 If the user name returned by
 115 .Xr getlogin 2
 116 is different from the login name referenced by the user ID, the name
 117 returned by
 118 .Xr getlogin 2
 119 is displayed, preceded by the keyword
 120 .Dq login .
 121 The user ID as a name is displayed, preceded by the keyword
 122 .Dq uid .
 123 If the effective user ID is different from the real user ID, the real user
 124 ID is displayed as a name, preceded by the keyword
 125 .Dq euid .
 126 If the effective group ID is different from the real group ID, the real group
 127 ID is displayed as a name, preceded by the keyword
 128 .Dq rgid .
 129 The list of groups to which the user belongs is then displayed as names,
 130 preceded by the keyword
 131 .Dq groups .
 132 Each display is on a separate line.
 133 .It Fl r
 134 Display the real ID for the
 135 .Fl g
 136 and
 137 .Fl u
 138 options instead of the effective ID.
 139 .It Fl u
 140 Display the effective user ID as a number.
 141 .El
 142 .Sh EXIT STATUS
 143 .Ex -std
 144 .Sh SEE ALSO
 145 .Xr who 1
 146 .Sh STANDARDS
 147 The
 148 .Nm
 149 function is expected to conform to
 150 .St -p1003.2 .
 151 .Sh HISTORY
 152 The
 153 historic
 154 .Xr groups 1
 155 command is equivalent to
 156 .Dq Nm id Fl Gn Op Ar user .
 157 .Pp
 158 The
 159 historic
 160 .Xr whoami 1
 161 command is equivalent to
 162 .Dq Nm id Fl un .
 163 .Pp
 164 The
 165 .Nm
 166 command appeared in
 167 .Bx 4.4 .