ubuntu 18.04 melodic roslaunch :七步使用roslaunch控制两个终端机器人
1,切换目录:$roscdbeginner_tutorials2,新建launch子目录:$mkdirlaunch3,进入子目录:$cdlaunch4,新建launch文件$geditturtlemimic.launch5,复制下面源码到turtlemimic.launch,然后保存并退出:6,运行roslaunch:$roslaunchbeginner_tutorialsturtlemimic.