Linux centos7 Common Command "SYSTEMCTL replacement service"

Although many of the Linux commands are the same, but the new version of CentOS 7 above and some of the previous commands are still different, but fortunately, there are hints. So on the Baidu above search for the following, as recorded, later convenient to view:

Centos7 start the service above and shut down the service is not the previous services Stop/start xxxx but systemctl command, but with the service he will have a reminder you use SYSTEMCTL, so big can not worry.

See all NIC IP addresses--ip addr

Start firewall--systemctl start Firewalld.service

Stop firewall--systemctl Stop Firewalld.service

View FIREWALLD firewall status--firewall-cmd--state

Disable firewall boot--systemctl disable Firewalld.service

Lists the running service status--systemctl

Start a service--systemctl start postfix.service

关闭一个服务——systemctl stop postfix.service

重启一个服务：——systemctl restart postfix.service

显示一个服务的状态——systemctl status postfix.service

在开机时启用一个服务——systemctl enable postfix.service

在开机时禁用一个服务——systemctl disable postfix.service

查看服务是否开机启动——systemctl is-enabled postfix.service;echo $?

查看已启动的服务列表——systemctl list-unit-files|grep enabled

设置系统默认启动运行级别3——ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target

设置系统默认启动运行级别5——ln -sf/lib/systemd/system/graphical.target/etc/systemd/system/default.target

原文地址：http://www.centoscn.com/CentOS/help/2015/0618/5687.html

Linux centos7 Common Command "SYSTEMCTL replacement service"