Linux 日常使用命令收集

1、防火墙相关命令

启动防火墙	sudo systemctl start firewalld
查看状态	sudo systemctl status firewalld
停止	sudo systemctl disable firewalld
禁用	sudo systemctl stop firewalld
重载防火墙规则	sudo firewall-cmd --reload
重启防火墙	sudo systemctl restart firewalld.service
查看开放的端口	sudo firewall-cmd --list-all public (active)   target: default   icmp-block-inversion: no   interfaces: enp3s0   sources:   services: dhcpv6-client ssh   ports: 20/tcp 21/tcp 22/tcp 80/tcp 8888/tcp 39000-40000/tcp 3306/tcp 3306/udp 6379/tcp 8080/tcp 9527/tcp 9527/udp   protocols:   masquerade: no   forward-ports:   source-ports:   icmp-blocks:   rich rules:
添加开放的端口：	sudo firewall-cmd --add-port=80/tcp --permanent Success 或者 sudo firewall-cmd --zone=public --add-port=9200/tcp --permanent
移除开放端口：	sudo firewall-cmd --remove-port=8161/tcp --permanent Success
查看端口号是否开放 （yes  / no ）	sudo firewall-cmd --query-port=7700/tcp no