119 lines
3.2 KiB
HTML
119 lines
3.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<meta http-equiv="Content-Type" content=
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"text/html; charset=utf-8">
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<title>id - Return user identity</title>
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<LINK rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</HEAD>
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<body bgcolor="#FFFFFF">
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h2>id - Return user identity</h2>
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<strong>Synopsis</strong>
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<p><strong>id</strong> [<em>user</em>]</p>
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<p><strong>id -G [-n]</strong> [<em>user</em>]</p>
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<p><strong>id -g [-nr]</strong> [<em>user</em>]</p>
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<p><strong>id -p</strong> [<em>user</em>]</p>
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<p><strong>id -u [-nr]</strong> [<em>user</em>]</p>
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<p><strong>Description</strong></p>
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<p>The <strong>id</strong> utility displays the user and group
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names and numeric identifiers, of the calling process, to standard
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output. If the real and effective identifiers are different, both
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are displayed, otherwise only the real identifier is displayed.</p>
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<p>If a <em>user</em> (login name or user identifier) is specified,
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the user and group identifiers of that user are displayed. In this
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case, the real and effective identifiers are assumed to be the
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same.</p>
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<p><strong>Options</strong></p>
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<dl>
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<dt><strong>-G</strong></dt>
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<dd>Display the different group identifiers (effective, real and
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supplementary) as white-space separated numbers, in no particular
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order.</dd>
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<dt><strong>-g</strong></dt>
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<dd>Display the effective group identifier as a number.</dd>
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<dt><strong>-n</strong></dt>
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<dd>Display the name of the user or group identifier for the
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<strong>-G</strong>, <strong>-g</strong> and <strong>-u</strong>
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options instead of the number. If any of the identifier numbers
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cannot be mapped into names, the number will be displayed as
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usual.</dd>
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<dt><strong>-p</strong></dt>
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<dd>Make the output human-readable. The user identifier as a name
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is displayed, preceded by the keyword "uid". If the effective user
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identifier is different from the real user identifier, the real
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user identifier is displayed as a name, preceded by the keyword
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"euid". If the effective group identifier is different from the
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real group identifier, the real group identifier is displayed as a
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name, preceded by the keyword "rgid". The list of groups to which
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the user belongs is then displayed as names, preceded by the
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keyword "groups". Each display is on a separate line.</dd>
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<dt><strong>-r</strong></dt>
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<dd>Display the real identifier for the <strong>-g</strong> and
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<strong>-u</strong> options instead of the effective
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identifier.</dd>
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<dt><strong>-u</strong></dt>
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<dd>Display the effective user identifier as a number.</dd>
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</dl>
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<p><strong>Exit Status</strong></p>
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<ul>
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<li>0 on success</li>
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<li>>0 if an error occurs.</li>
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</ul>
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<p><strong>Related information</strong></p>
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<ul>
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<li><a href="logname.htm">logname - Return user's login
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name</a></li>
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</ul>
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<strong>Examples</strong>
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<ol>
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<li>Display all user and groups identifiers that belong to the user
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"SAM".
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<pre>
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id -p SAM
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uid SAM
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groups 500, 1
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</pre>
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</li>
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</ol>
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<!-- end ibmbody========================================================= -->
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</body>
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</html>
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