ROS_commands.sh

# init
$ mkdir -p ~/catkin_ws/src
$ cd ~/catkin_ws/src
$ catkin_init_workspace

# Launch Gazebo simulator
$ cd ~/catkin_ws
$ catkin_make
$ source devel/setup.bash
$ roslaunch simple_arm robot_spawn.launch

# Launch ROS core
$ roscore

# List nodes
$ rosnode list

# List topics
$ rostopic list

# List services
$ rosservice list

# Topic info
$ rosropic info /turtle1/cmd_vel

# Message info
$ rosmsg info geometry_msgs/Twist

# Check dependencies
$ rosdep check simple_arm

# Install missed dependencies
$ rosdep install -i simple_arm

# Call service
$ rosservice call /arm_mover/safe_move "joint_1: 1.57
joint_2: 1.57"

# Set service parameter
$ rosparam set /arm_mover/max_joint_2_angle 1.57

# Run script
$ rosrun simple_arm simple_mover

# Run rviz visualization tool (requires roscore)
$ rosrun rviz rviz

# load the robot description (urdf) into the parameter server and publish transform between all the robot links
$ roslaunch kuka_arm load_urdf.launch