使用CentOS系统的时候,经常会遇到系统日志文件非常大导致磁盘空间占满的情况,如果直接删除,会导致日志错误,不再生成日志,这时,我们可以使用下面的方法清空日志。
查看硬盘占用
df -h
CentOS 6系统
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/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
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