projects / OpenSPARC-T2-SAM / blame
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| 17 | <title>8.3 grp -- The group database</title> | |
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| 54 | ||
| 55 | <H1><A NAME="SECTION0010300000000000000000"> | |
| 56 | 8.3 <tt class="module">grp</tt> -- | |
| 57 | The group database</A> | |
| 58 | </H1> | |
| 59 | ||
| 60 | <P> | |
| 61 | <A NAME="module-grp"></A> | |
| 62 | <p class="availability">Availability: <span | |
| 63 | class="platform">Unix</span>.</p> | |
| 64 | ||
| 65 | <P> | |
| 66 | This module provides access to the <span class="Unix">Unix</span> group database. | |
| 67 | It is available on all <span class="Unix">Unix</span> versions. | |
| 68 | ||
| 69 | <P> | |
| 70 | Group database entries are reported as a tuple-like object, whose | |
| 71 | attributes correspond to the members of the <code>group</code> structure | |
| 72 | (Attribute field below, see <code><pwd.h></code>): | |
| 73 | ||
| 74 | <P> | |
| 75 | <div class="center"><table class="realtable"> | |
| 76 | <thead> | |
| 77 | <tr> | |
| 78 | <th class="right" >Index</th> | |
| 79 | <th class="left" >Attribute</th> | |
| 80 | <th class="left" >Meaning</th> | |
| 81 | </tr> | |
| 82 | </thead> | |
| 83 | <tbody> | |
| 84 | <tr><td class="right" valign="baseline">0</td> | |
| 85 | <td class="left" >gr_name</td> | |
| 86 | <td class="left" >the name of the group</td></tr> | |
| 87 | <tr><td class="right" valign="baseline">1</td> | |
| 88 | <td class="left" >gr_passwd</td> | |
| 89 | <td class="left" >the (encrypted) group password; often empty</td></tr> | |
| 90 | <tr><td class="right" valign="baseline">2</td> | |
| 91 | <td class="left" >gr_gid</td> | |
| 92 | <td class="left" >the numerical group ID</td></tr> | |
| 93 | <tr><td class="right" valign="baseline">3</td> | |
| 94 | <td class="left" >gr_mem</td> | |
| 95 | <td class="left" >all the group member's user names</td></tr></tbody> | |
| 96 | </table></div> | |
| 97 | ||
| 98 | <P> | |
| 99 | The gid is an integer, name and password are strings, and the member | |
| 100 | list is a list of strings. | |
| 101 | (Note that most users are not explicitly listed as members of the | |
| 102 | group they are in according to the password database. Check both | |
| 103 | databases to get complete membership information.) | |
| 104 | ||
| 105 | <P> | |
| 106 | It defines the following items: | |
| 107 | ||
| 108 | <P> | |
| 109 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
| 110 | <td><nobr><b><tt id='l2h-2978' xml:id='l2h-2978' class="function">getgrgid</tt></b>(</nobr></td> | |
| 111 | <td><var>gid</var>)</td></tr></table></dt> | |
| 112 | <dd> | |
| 113 | Return the group database entry for the given numeric group ID. | |
| 114 | <tt class="exception">KeyError</tt> is raised if the entry asked for cannot be found. | |
| 115 | </dl> | |
| 116 | ||
| 117 | <P> | |
| 118 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
| 119 | <td><nobr><b><tt id='l2h-2979' xml:id='l2h-2979' class="function">getgrnam</tt></b>(</nobr></td> | |
| 120 | <td><var>name</var>)</td></tr></table></dt> | |
| 121 | <dd> | |
| 122 | Return the group database entry for the given group name. | |
| 123 | <tt class="exception">KeyError</tt> is raised if the entry asked for cannot be found. | |
| 124 | </dl> | |
| 125 | ||
| 126 | <P> | |
| 127 | <dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"> | |
| 128 | <td><nobr><b><tt id='l2h-2980' xml:id='l2h-2980' class="function">getgrall</tt></b>(</nobr></td> | |
| 129 | <td><var></var>)</td></tr></table></dt> | |
| 130 | <dd> | |
| 131 | Return a list of all available group entries, in arbitrary order. | |
| 132 | </dl> | |
| 133 | ||
| 134 | <P> | |
| 135 | <div class="seealso"> | |
| 136 | <p class="heading">See Also:</p> | |
| 137 | ||
| 138 | <dl compact="compact" class="seemodule"> | |
| 139 | <dt>Module <b><tt class="module"><a href="module-pwd.html">pwd</a></tt>:</b> | |
| 140 | <dd>An interface to the user database, similar to this. | |
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| 178 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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