qq_32949893的博客

linux 防火墙开启端口firewall-cmd --zone=public --add-port=80/tcp --permanent

sed 使用大全（持续更新中）找到目标行替换(替换整行)sed -i "/hello/c hi" a.txt

rmmod: ERROR: Module xxxx is in use by:yyyyyrmmod: ERROR: Module A is in use by:B参考方法rmmod: ERROR: Module A is in use by:B参考https://askubuntu.com/questions/521222/how-to-unload-a-kernel-module-which-is-in-use方法First, find out, which other modules use