1  sudo cp /etc/apt/sources.list /etc/apt/sources.list_bak
    2  ls
    3  sudo nano /etc/apt/sources.list
    4  sudo apt-get update
    5  sudo nano /etc/apt/sources.list
    6  sudo apt-get update
    7  sudo nano /etc/apt/sources.list
    8  sudo apt-get update
    9  sudo sh -c 'echo "deb https://mirrors.ustc.edu.cn/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
   10  sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
   11  sudo apt update
   12  apt list --upgradeable
   13  sudo apt-get upgrade
   14  df -h
   15  htop
   16  sudo apt-get install ros-noetic-desktop 
   17  source /opt/ros/noetic/setup.bash
   18  echo "source /opt/ros/noetic/setup.bash" >> ~/.bashrc
   19  source ~/.bashrc
   20  rosversion -d
   21  rosrun turtlesim turtlesim_node 
   22  export |grep ROS
   23  roscore
   24  rosrun turtlesim turtlesim_node 
   25  rosrun turtlesim turtle_teleop_key 
   26  sudo apt install python3-rosdep python3-rosinstall python3-rosinstall-generator python3-wstool build-essential
   27  sudo apt install python3-rosdep
   28  sudo rosdep init
   29  rosdep update
   30  sudo nano /usr/lib/python2.7/dist-packages/rosdistro/loader.py
   31  gcc
   32  gcc --help
   33  gcc --version
   34  sudo raspi-config 
   35  cd Documents/bobac3_ws/
   36  ls
   37  catkin_make
   38  source devel/setup.bash 
   39  sudo apt-get install jstest
   40  jstest
   41  sudo apt-get install jstest
   42  apt-cache search jstest
   43  sudo apt-get install joystest jstest-gtk
   44  sudo apt-get install joystick jstest-gtk
   45  jstest /dev/input/js0
   46  reboot
   47  cd Documents/bobac3_ws/
   48  ls
   49  source devel/setup.bash 
   50  roslaunch bobac3_base bobac3_base.launch 
   51  catkin_make
   52  ls
   53  sudo nano /etc/bash.bashrc 
   54  reboot
   55  cd Documents/bobac3_ws/
   56  source devel/setup.bash 
   57  roslaunch bobac3_joy bobac3_joy.launch 
   58  cd /home/pi/Documents/bobac3_ws/devel/lib/joy
   59  ls
   60  file joy_node 
   61  ./joy_node 
   62  cd ..
   63  ls
   64  cd bobac3_base/
   65  ls
   66  file bobac3_base_node 
   67  jstest /dev/input/js0 
   68  cd Documents/
   69  ls
   70  cd bobac3_ws/
   71  ls
   72  source devel/setup.bash 
   73  cat /etc/bash.bashrc 
   74  cd devel/
   75  pwd
   76  sudo nano ~/.bashrc 
   77  reboot
   78  roslaunch bobac3_joy bobac3_joy.launch 
   79  sudo apt-get install ros-noetic-joystick-drivers 
   80  cd /etc/
   81  ls
   82  cd ~
   83  ls
   84  hisotry
   85  history
   86  cd Documents/
   87  ls
   88  history >> history
   89  history >> history.txt