sim_vehicle.py: command not found

[PoPing9302]

hi, i recently followed the tutorial given to run simulation on gazebo. everything went smoothly without error until the following section

COPTER
On 1st Terminal(Launch Ardupilot SITL)

sim_vehicle.py -v ArduCopter -f gazebo-iris --map --console
On 2nd Terminal(Launch Gazebo with demo 3DR Iris model)

gazebo --verbose worlds/iris_arducopter_runway.world

I tried to run the code on the first terminal and it returned sim_vehicle.py: command not found. can you help clarify on this? thank you so much. Im new to this and would like to learn.

Ubuntu 18.04
ROS Melodic
Gazebo 9

[khancyr]

Hello,

You should have miss to reload your PATH or miss a step on SITL configuration see http://ardupilot.org/dev/docs/setting-up-sitl-on-linux.html#install-some-required-packages

Try to make SITL works without gazebo first.

[sofiathefirst]

$find . -name sim_vehicle.py
then use the full path name