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syslog
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<div class="post-body" itemprop="articleBody"><h5 id="syslog-conf介绍"><a href="#syslog-conf介绍" class="headerlink" title="syslog.conf介绍"></a>syslog.conf介绍</h5><p>syslog采用可配置的、统一的系统登记程序，随时从系统各处接受log请求，然后根据**/etc/syslog.conf**中的预先设定把log信息写入相应文件中、邮寄给特 定用户或者直接以消息的方式发往控制台。ps：不同平台下的文件不一定相同，可以在etc下grep /var/log/messages等来查看文件名。</p>
<h5 id="具体示例"><a href="#具体示例" class="headerlink" title="具体示例"></a>具体示例</h5><p>*.err;kern.debug;daemon.notice;mail.crit [TAB] /var/adm/messages</p>
<p>这行中的“action”就是我们常关心的那个/var/adm/messages文件，输出到它的信息源头“selector”是：</p>
<p>*.err – 所有的一般错误信息；</p>
<p>kern.debug – 核心产生的调试信息；</p>
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<p>mail.crit – 邮件系统的关键警告信息</p>
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