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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</span><hr><div class="refentry"><a name="sd-journal"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd-journal — APIs for submitting and querying log entries to and
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from the journal</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include <systemd/sd-journal.h></pre></div><div class="cmdsynopsis"><p><code class="command">pkg-config --cflags --libs libsystemd</code> </p></div></div><div class="refsect1"><a name="idm140335212375168"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="filename">sd-journal.h</code> provides APIs to submit
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and query log entries. The APIs exposed act both as client for the
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<a href="systemd-journald.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-journald.service</span>(8)</span></a>
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journal service and as parser for the journal files on disk.
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</p><p>See
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<a href="sd_journal_print.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_print</span>(3)</span></a>,
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<a href="sd_journal_stream_fd.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_stream_fd</span>(3)</span></a>,
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<a href="sd_journal_open.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_open</span>(3)</span></a>,
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<a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a>,
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<a href="sd_journal_get_realtime_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_realtime_usec</span>(3)</span></a>,
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<a href="sd_journal_add_match.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_add_match</span>(3)</span></a>,
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<a href="sd_journal_seek_head.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_seek_head</span>(3)</span></a>,
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<a href="sd_journal_get_cursor.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cursor</span>(3)</span></a>,
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<a href="sd_journal_get_cutoff_realtime_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cutoff_realtime_usec</span>(3)</span></a>,
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<a href="sd_journal_get_cutoff_monotonic_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cutoff_monotonic_usec</span>(3)</span></a>,
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<a href="sd_journal_get_usage.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_usage</span>(3)</span></a>,
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<a href="sd_journal_get_catalog.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_catalog</span>(3)</span></a>
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and
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<a href="sd_journal_get_fd.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_fd</span>(3)</span></a>
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for more information about the functions implemented.</p><p>Command line access for submitting entries to the journal is
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available with the
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<a href="systemd-cat.html"><span class="citerefentry"><span class="refentrytitle">systemd-cat</span>(1)</span></a>
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tool. Command line access for querying entries from the journal is
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available with the
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<a href="journalctl.html"><span class="citerefentry"><span class="refentrytitle">journalctl</span>(1)</span></a>
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tool.</p></div><div class="refsect1"><a name="idm140335205127632"></a><h2 id="Notes">Notes<a class="headerlink" title="Permalink to this headline" href="#Notes">¶</a></h2><p><a name="pkgconfig-text"></a>These APIs are implemented as a shared
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library, which can be compiled and linked to with the
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<code class="constant">libsystemd</code> <a href="http://linux.die.net/man/1/pkg-config"><span class="citerefentry"><span class="refentrytitle">pkg-config</span>(1)</span></a>
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file.</p></div><div class="refsect1"><a name="idm140335208648672"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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<a href="sd_journal_print.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_print</span>(3)</span></a>,
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<a href="sd_journal_stream_fd.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_stream_fd</span>(3)</span></a>,
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<a href="sd_journal_open.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_open</span>(3)</span></a>,
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<a href="sd_journal_next.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_next</span>(3)</span></a>,
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<a href="sd_journal_get_data.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_data</span>(3)</span></a>,
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<a href="sd_journal_get_realtime_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_realtime_usec</span>(3)</span></a>,
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<a href="sd_journal_add_match.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_add_match</span>(3)</span></a>,
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<a href="sd_journal_seek_head.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_seek_head</span>(3)</span></a>,
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<a href="sd_journal_get_cursor.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cursor</span>(3)</span></a>,
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<a href="sd_journal_get_cutoff_realtime_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cutoff_realtime_usec</span>(3)</span></a>,
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<a href="sd_journal_get_cutoff_monotonic_usec.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_cutoff_monotonic_usec</span>(3)</span></a>,
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<a href="sd_journal_get_usage.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_usage</span>(3)</span></a>,
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<a href="sd_journal_get_fd.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_fd</span>(3)</span></a>,
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<a href="sd_journal_query_unique.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_query_unique</span>(3)</span></a>,
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<a href="sd_journal_get_catalog.html"><span class="citerefentry"><span class="refentrytitle">sd_journal_get_catalog</span>(3)</span></a>,
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<a href="journalctl.html"><span class="citerefentry"><span class="refentrytitle">journalctl</span>(1)</span></a>,
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<a href="sd-id128.html"><span class="citerefentry"><span class="refentrytitle">sd-id128</span>(3)</span></a>,
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<a href="http://linux.die.net/man/1/pkg-config"><span class="citerefentry"><span class="refentrytitle">pkg-config</span>(1)</span></a>
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</p></div></div></body></html>
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