使用CentOS系统的系统系统时候，常常会遇到系统日志文件非常大导致磁盘空间占满的磁盘云服务器ecs是什么啊情况，如果直接移除，空间云服务器ecs是什么啊会导致日志谬误，占满不再生成日志，清空这时，日志我们可以使用下面的系统系统方法清空日志。

磁盘查看硬盘占用 <span class="hljs-attribute">df</span> -h <span class="hljs-attribute">df</span> -h df -h CentOS 6系统 <a target="_blank" href="https://www.kaiyuanyuanma.com/tag/790.html" title="View all posts in cat">cat</a> /<a target="_blank" href="https://www.kaiyuanyuanma.com/tag/791.html" title="View all posts in dev">dev</a>/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/<a target="_blank" href="https://www.kaiyuanyuanma.com/tag/789.html" title="View all posts in log">log</a>/boot.log cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/btmp cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/cron cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/dmesg cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/dracut.log cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/lastlog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/maillog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/messages cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/secure cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/spooler cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/tallylog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/wtmp cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/yum.log <a target="_blank" href="https://www.kaiyuanyuanma.com/tag/790.html" title="View all posts in cat">cat</a> /<a target="_blank" href="https://www.kaiyuanyuanma.com/tag/791.html" title="View all posts in dev">dev</a>/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/<a target="_blank" href="https://www.kaiyuanyuanma.com/tag/789.html" title="View all posts in log">log</a>/boot.log cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/btmp cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/cron cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/dmesg cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/dracut.log cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/lastlog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/maillog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/messages cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/secure cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/spooler cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/tallylog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/wtmp cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/yum.log cat /dev/null > /var/log/boot.log cat /dev/null > /var/log/btmp cat /dev/null > /var/log/cron cat /dev/null > /var/log/dmesg cat /dev/null > /var/log/dracut.log cat /dev/null > /var/log/lastlog cat /dev/null > /var/log/maillog cat /dev/null > /var/log/messages cat /dev/null > /var/log/secure cat /dev/null > /var/log/spooler cat /dev/null > /var/log/tallylog cat /dev/null > /var/log/wtmp cat /dev/null > /var/log/yum.log CentOS 7系统 cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/boot.log cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/btmp cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/cron cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/dmesg cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/firewalld cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/grubby cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/lastlog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/mail.info cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/maillog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/messages cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/secure cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/spooler cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/syslog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/tallylog cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/wpa_supplicant.log cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/wtmp cat /dev/<span class="hljs-literal">null</span>> /<span class="hljs-keyword">var</span>/log/yum.log cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/boot.log cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/btmp cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/cron cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/dmesg cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/firewalld cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/grubby cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/lastlog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/mail.info cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/maillog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/messages cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/secure cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/spooler cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/syslog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/tallylog cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/wpa_supplicant.log cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/wtmp cat /dev/<span class="hljs-literal">null</span> > /<span class="hljs-keyword">var</span>/log/yum.log cat /dev/null > /var/log/boot.log cat /dev/null > /var/log/btmp cat /dev/null > /var/log/cron cat /dev/null > /var/log/dmesg cat /dev/null > /var/log/firewalld cat /dev/null > /var/log/grubby cat /dev/null > /var/log/lastlog cat /dev/null > /var/log/mail.info cat /dev/null > /var/log/maillog cat /dev/null > /var/log/messages cat /dev/null > /var/log/secure cat /dev/null > /var/log/spooler cat /dev/null > /var/log/syslog cat /dev/null > /var/log/tallylog cat /dev/null > /var/log/wpa_supplicant.log cat /dev/null > /var/log/wtmp cat /dev/null > /var/log/yum.log 内容看完了