摘要：
#!/bin/bash touch /tmp/badipnew.log;touch /tmp/newip.log; if [ ! -f "/tmp/badip.log" ];then cat /var/log/secure|grep "authentication failure\|Did not receive identification"|grep -o '[0-9]\+\.[0-9... 阅读全文
摘要：
https://lug.ustc.edu.cn/wiki/mirrors/help/centos 阅读全文