systemctl stop postfix
systemctl stop avahi-daemon
systemctl disable postfix
systemctl disable avahi-daemon
systemctl list-unit-files 查看正在运行服务的状态报告
systemctl start httpd.service 启动服务
systemctl stop httpd.service 关闭服务
systemctl restart httpd.service 重启服务
systemctl reload httpd.service 重新加载服务
systemctl disable httpd.service 开机不启动
systemctl enable httpd.service 开机启动
systemctl status httpd.service 查看服务运行状态
systemctl show httpd.service 显示服务或任务的属性
systemctl list-dependencies httpd.service 检查服务依赖关系
systemctl is-enabled httpd.service 检查服务是否开机启动及级别
systemctl -H 192.168.117.128 start httpd.service 启动192.168.117.128机器上的httpd服务