systemctl

centos6

centos7

启动

service NAME start

systemctl start NAME[.service]

停止

service NAME stop

systemctl stop NAME[.service]

重启

service NAME restart

systemctl restart NAME[.service]

重载

server NAME reload

systemctl reload NAME[.service]

状态

service NAME status

systemctl status NAME[.service]

条件式重启（启动重启，不启动不重启）

service NAME condrestart

systemctl try-restart NAME[.service]

查看某服务当前状态

systemctl is-active NAME[.service]

查看所有已经激活的服务[所有]

systemctl list-units –type service [--all]

设定开机启动

chkconfig NAME on

systemctl enable NAME[.service]

禁止开机启动

chkconfig NAME off

systemctl disable NAME[.service]

查看所有开机启动

chkconfig --list

systemctl list-unit-files –type service

查看某服务是否开机紫气

systemctl is-enabled NAME[.service]

查看运行级别

runlevel

systemctl list-units –type target

查看默认运行级别

/etc/inittab

systemctl get-default

修改默认级别

systemctl set-default NAME.target

切换至紧急救援模式

systemctl rescue