glibc.html

CLFS(Cross-Compiled Linux From Scratch)的文档 Version CLFS-SVN-20060417

EOF</kbd>
</pre>
        <p>
          To determine the local time zone, run the following script:
        </p>
        <pre class="userinput">
<kbd class="command">tzselect</kbd>
</pre>
        <p>
          After answering a few questions about the location, the script will
          output the name of the time zone (e.g., <span class=
          "emphasis"><em>EST5EDT</em></span> or <span class=
          "emphasis"><em>Canada/Eastern</em></span>). Then create the
          <tt class="filename">/etc/localtime</tt> file by running:
        </p>
        <pre class="userinput">
<kbd class=
"command">cp -v --remove-destination /usr/share/zoneinfo/<em class="replaceable"><tt>[xxx]</tt></em> \
    /etc/localtime</kbd>
</pre>
        <p>
          Replace <em class="replaceable"><tt>[xxx]</tt></em> with the name
          of the time zone that <span><strong class=
          "command">tzselect</strong></span> provided (e.g., Canada/Eastern).
        </p>
        <div class="variablelist">
          <p class="title">
            <b>The meaning of the cp option:</b>
          </p>
          <dl>
            <dt>
              <span class="term"><em class=
              "parameter"><tt>--remove-destination</tt></em></span>
            </dt>
            <dd>
              <p>
                This is needed to force removal of the already existing
                symbolic link. The reason for copying the file instead of
                using a symlink is to cover the situation where <tt class=
                "filename">/usr</tt> is on a separate partition. This could
                be important when booted into single user mode.
              </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="configuration" lang="en" xml:lang="en">
        <div class="titlepage">
          <a id="conf-ld" name="conf-ld"></a>
          <h2 class="sect2">
            10.6.4. Configuring The Dynamic Loader
          </h2>
        </div>
        <p>
          By default, the dynamic loader (<tt class=
          "filename">/lib/ld-linux.so.2</tt>) searches through <tt class=
          "filename">/lib</tt> and <tt class="filename">/usr/lib</tt> for
          dynamic libraries that are needed by programs as they are run.
          However, if there are libraries in directories other than
          <tt class="filename">/lib</tt> and <tt class=
          "filename">/usr/lib</tt>, these need to be added to the <tt class=
          "filename">/etc/ld.so.conf</tt> file in order for the dynamic
          loader to find them. Two directories that are commonly known to
          contain additional libraries are <tt class=
          "filename">/usr/local/lib</tt> and <tt class=
          "filename">/opt/lib</tt>, so add those directories to the dynamic
          loader's search path.
        </p>
        <p>
          Create a new file <tt class="filename">/etc/ld.so.conf</tt> by
          running the following:
        </p>
        <pre class="userinput">
<kbd class="command">cat &gt; /etc/ld.so.conf &lt;&lt; "EOF"
<tt class="literal"># Begin /etc/ld.so.conf

/usr/local/lib
/opt/lib

# End /etc/ld.so.conf</tt>
EOF</kbd>
</pre>
      </div>
      <div class="content" lang="en" xml:lang="en">
        <div class="titlepage">
          <a id="contents-glibc" name="contents-glibc"></a>
          <h2 class="sect2">
            10.6.5. Contents of Glibc
          </h2>
        </div>
        <div class="segmentedlist">
          <div class="seglistitem">
            <div class="seg">
              <strong><span class="segtitle">Installed
              programs:</span></strong> <span class="seg">catchsegv, gencat,
              getconf, getent, iconv, iconvconfig, ldconfig, ldd, lddlibc4,
              locale, localedef, mtrace, nscd, nscd_nischeck, pcprofiledump,
              pt_chown, rpcgen, rpcinfo, sln, sprof, tzselect, xtrace, zdump,
              and zic</span>
            </div>
            <div class="seg">
              <strong><span class="segtitle">Installed
              libraries:</span></strong> <span class="seg">ld.so,
              libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so],
              libbsd-compat.a, libc.[a,so], libcrypt.[a,so], libdl.[a,so],
              libg.a, libieee.a, libm.[a,so], libmcheck.a, libmemusage.so,
              libnsl.a, libnss_compat.so, libnss_dns.so, libnss_files.so,
              libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so,
              libpcprofile.so, libpthread.[a,so], libresolv.[a,so],
              librpcsvc.a, librt.[a,so], libthread_db.so, and
              libutil.[a,so]</span>
            </div>
          </div>
        </div>
        <div class="variablelist">
          <h3>
            <a id="id3661906" name="id3661906"></a>Short Descriptions
          </h3>
          <table border="0">
            <col align="left" valign="top" />
            <tbody>
              <tr>
                <td>
                  <a id="catchsegv" name="catchsegv"></a><span class=
                  "term"><span><strong class=
                  "command">catchsegv</strong></span></span>
                </td>
                <td>
                  <p>
                    Can be used to create a stack trace when a program
                    terminates with a segmentation fault
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="gencat" name="gencat"></a><span class=
                  "term"><span><strong class=
                  "command">gencat</strong></span></span>
                </td>
                <td>
                  <p>
                    Generates message catalogues
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="getconf" name="getconf"></a><span class=
                  "term"><span><strong class=
                  "command">getconf</strong></span></span>
                </td>
                <td>
                  <p>
                    Displays the system configuration values for file system
                    specific variables
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="getent" name="getent"></a><span class=
                  "term"><span><strong class=
                  "command">getent</strong></span></span>
                </td>
                <td>
                  <p>
                    Gets entries from an administrative database
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="iconv" name="iconv"></a><span class=
                  "term"><span><strong class=
                  "command">iconv</strong></span></span>
                </td>
                <td>
                  <p>
                    Performs character set conversion
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="iconvconfig" name="iconvconfig"></a><span class=
                  "term"><span><strong class=
                  "command">iconvconfig</strong></span></span>
                </td>
                <td>
                  <p>
                    Creates fastloading <span><strong class=
                    "command">iconv</strong></span> module configuration
                    files
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="ldconfig" name="ldconfig"></a><span class=
                  "term"><span><strong class=
                  "command">ldconfig</strong></span></span>
                </td>
                <td>
                  <p>
                    Configures the dynamic linker runtime bindings
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="ldd" name="ldd"></a><span class=
                  "term"><span><strong class=
                  "command">ldd</strong></span></span>
                </td>
                <td>
                  <p>
                    Reports which shared libraries are required by each given
                    program or shared library
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="lddlibc4" name="lddlibc4"></a><span class=
                  "term"><span><strong class=
                  "command">lddlibc4</strong></span></span>
                </td>
                <td>
                  <p>
                    Assists <span><strong class="command">ldd</strong></span>
                    with object files
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="locale" name="locale"></a><span class=
                  "term"><span><strong class=
                  "command">locale</strong></span></span>
                </td>
                <td>
                  <p>
                    Tells the compiler to enable or disable the use of POSIX
                    locales for built-in operations
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="localedef" name="localedef"></a><span class=
                  "term"><span><strong class=
                  "command">localedef</strong></span></span>
                </td>
                <td>
                  <p>
                    Compiles locale specifications
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="mtrace" name="mtrace"></a><span class=
                  "term"><span><strong class=
                  "command">mtrace</strong></span></span>
                </td>
                <td>
                  <p>
                    Reads and interprets a memory trace file and displays a
                    summary in human-readable format
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="nscd" name="nscd"></a><span class=
                  "term"><span><strong class=
                  "command">nscd</strong></span></span>
                </td>
                <td>
                  <p>
                    A daemon that provides a cache for the most common name
                    service requests
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="nscd_nischeck" name="nscd_nischeck"></a><span class=
                  "term"><span><strong class=
                  "command">nscd_nischeck</strong></span></span>
                </td>
                <td>
                  <p>
                    Checks whether or not secure mode is necessary for NIS+
                    lookup
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="pcprofiledump" name="pcprofiledump"></a><span class=
                  "term"><span><strong class=
                  "command">pcprofiledump</strong></span></span>
                </td>
                <td>
                  <p>
                    Dumps information generated by PC profiling
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="pt_chown" name="pt_chown"></a><span class=
                  "term"><span><strong class=
                  "command">pt_chown</strong></span></span>
                </td>
                <td>
                  <p>
                    A helper program for <span><strong class=
                    "command">grantpt</strong></span> to set the owner, group
                    and access permissions of a slave pseudo terminal
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="rpcgen" name="rpcgen"></a><span class=
                  "term"><span><strong class=
                  "command">rpcgen</strong></span></span>
                </td>
                <td>
                  <p>
                    Generates C code to implement the Remote Procecure Call
                    (RPC) protocol
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="rpcinfo" name="rpcinfo"></a><span class=
                  "term"><span><strong class=
                  "command">rpcinfo</strong></span></span>
                </td>
                <td>
                  <p>
                    Makes an RPC call to an RPC server
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <a id="sln" name="sln"></a><span class=
                  "term"><span><strong class=
                  "command">sln</strong></span></span>
                </td>
                <td>
                  <p>
                    A statically linked <span><strong class=