$ sudo apt update
โ
$ sudo apt upgrade ์
๊ทธ๋ ์ด๋๋ ํด์ฃผ์_!
$ sudo apt install ros-foxy-turtlesim

$ ros2 run turtlesim turtlesim_node
$ ros run turtlesim turtle_teleop_key


โก ๋ฐฉํฅํค๋ก ๊ฑฐ๋ถ์ด๋ฅผ ์ด๋ํ ์ ์๋ค!_!
$ sudo apt-get install ros2-melodic-rqt
$ sudo apt install ros-foxy-rqt
// rqt ์ค์น
$ rqt_graph
// rqt ์คํ
