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+# firewalld 简便小工具
+
+## 安装命令
+
+```bash
+wget -O /usr/bin/fwd https://mirror.liuyan.wang/shell/fwd.sh && chmod +x /usr/bin/fwd
+```
+
+## 使用方法
+```bash
+$fwd -h
+Usage:
+ fwd [options]
+
+Options:
+ -a, --add           open a tcp port #增加tcp端口
+ -au, --add-udp      open a udp port #增加udp端口
+ -r, --remove        close a tcp port #关闭tcp端口
+ -ru, --remove-udp   close a udp port #关闭udp端口
+ -l, --list          show opened ports #展示以开放列表
+ start,              start firewalld #开启firewalld
+ stop,               stop firewalld #关闭firewalld
+ status,             see if started #查看firewalld装态
+ update,             update this command #升级
+ -v, --version       show version of local and remote #查看版本 
+ -h, --help          display this help and exit #查看帮助
+
+```
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