通过命令行查看docker服务是否已启动的方法如下：

查看docker的运行状态

systemctl status docker

输出如下：

[root@izr86o15kikb3az /]# systemctl status docker● docker.service - Docker Application Container Engine   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)   Active: active (running) since Thu 2019-10-24 16:05:01 CST; 29s ago     Docs: https://docs.docker.com Main PID: 6485 (dockerd)    Tasks: 9   Memory: 111.3M   CGroup: /system.slice/docker.service           └─6485 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.127523857+08:00" level=info msg="ccResolverWrapper...e=grpcOct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.127533900+08:00" level=info msg="ClientConn switch...e=grpcOct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.218871071+08:00" level=info msg="[graphdriver] usi...rlay2"Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.233949835+08:00" level=info msg="Loading container...tart."Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.631635629+08:00" level=info msg="Default bridge (d...dress"Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.764941881+08:00" level=info msg="Loading containers: done."Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.775134383+08:00" level=info msg="Docker daemon" co...9.03.4Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.775613028+08:00" level=info msg="Daemon has comple...ation"Oct 24 16:05:01 izr86o15kikb3az systemd[1]: Started Docker Application Container Engine.Oct 24 16:05:01 izr86o15kikb3az dockerd[6485]: time="2019-10-24T16:05:01.815780672+08:00" level=info msg="API listen on /va....sock"Hint: Some lines were ellipsized, use -l to show in full.

扩展：

启动docker

systemctl start docker

关闭docker

systemctl stop docker

推荐教程：docker教程

以上就是如何通过命令行查看docker服务是否已启动的详细内容，更多请关注24课堂在线网其它相关文章！