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| <h4 class="subsection">29.13.1 The Data Structure that Describes a User</h4> |
| |
| <p>The functions and data structures for accessing the system user database |
| are declared in the header file <samp><span class="file">pwd.h</span></samp>. |
| <a name="index-pwd_002eh-3391"></a> |
| <!-- pwd.h --> |
| <!-- POSIX.1 --> |
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| <div class="defun"> |
| — Data Type: <b>struct passwd</b><var><a name="index-struct-passwd-3392"></a></var><br> |
| <blockquote><p>The <code>passwd</code> data structure is used to hold information about |
| entries in the system user data base. It has at least the following members: |
| |
| <dl> |
| <dt><code>char *pw_name</code><dd>The user's login name. |
| |
| <br><dt><code>char *pw_passwd.</code><dd>The encrypted password string. |
| |
| <br><dt><code>uid_t pw_uid</code><dd>The user ID number. |
| |
| <br><dt><code>gid_t pw_gid</code><dd>The user's default group ID number. |
| |
| <br><dt><code>char *pw_gecos</code><dd>A string typically containing the user's real name, and possibly other |
| information such as a phone number. |
| |
| <br><dt><code>char *pw_dir</code><dd>The user's home directory, or initial working directory. This might be |
| a null pointer, in which case the interpretation is system-dependent. |
| |
| <br><dt><code>char *pw_shell</code><dd>The user's default shell, or the initial program run when the user logs in. |
| This might be a null pointer, indicating that the system default should |
| be used. |
| </dl> |
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