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Under the background of "Made in China 2025", it is the general trend for industrial enterprises to change their development mode and accelerate the integration of the two. The demand for industrial software and information services will continue to increase. China will continue to maintain its position as a new force in the growth of the global industrial software market.[1]1Centos7, The service is no longer started using init-style scripts, Instead, the unit file is used, Therefore, commands like service iptables start can no longer be used in centos7, Therefore, service iptables save cannot be executed. At the same time, firewall is used to replace the original iptables service in centos7, but don't worry, we just need to install iptables and iptables-services through yum source (iptables are usually installed by default, but iptables-services are not installed by default in centos7). After installing iptables-services in centos7, the rules can be saved by the service iptables save command, as in centos6, and the rules are also saved in the/etc/sysconfig/iptables file.这是一个孤独的少年和突然出现的奇怪女仆，一点点地孕育着羁绊的故事。三名大圈仔来港串通警员雄打劫金饰工场。雄出诡计令大圈仔与警方先相残杀，一大圈仔死去，其兄弟往找雄算帐。另一方面，警方已暗下埋伏围剿贼匪。