Common commands for CENTOS7 systems

Personal work is summed up for self-reference use, if there is no place to ask the great gods to point out, thank you.

View all network card IP addresses--IP addr

Start firewall--systemctl start Firewalld.service

Stop firewall--systemctl Stop Firewalld.service

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

This article is from the "confused It Boys" blog, please be sure to keep this source http://mimangitboy.blog.51cto.com/4487103/1662671

Common commands for CENTOS7 systems