Can you make me a blender script in python to copy all the lights present in the scene?
user
Certainly! Here's a Blender Python script that will copy all lights in the current scene:
``` 
import bpy

# Get a list of all objects in the scene
scene = bpy.context.scene
all_objects = scene.objects

# Loop through each object and check if it's a light
for obj in all_objects:
    if obj.type == 'LIGHT':
        # Duplicate the light object
        new_obj = obj.copy()
        # Link the new object to the scene
        scene.collection.objects.link(new_obj)
``` 
This script will loop through all objects in the current scene, check if the object is a light, and duplicate it if it is. The duplicated light will be linked to the scene and will have a new name (e.g. "Light.001").

You can save this script as a .py file and run it from the Blender text editor or by calling Blender from the command line with the --python option. For example, if your script is saved as copy_lights.py, you can run it with the following command:
``` 
blender --background --python copy_lights.py
``` 
This will open Blender in background mode, run the script, and then close Blender.
assistant
how do I check if I have blender properly installed from the command line? Assume I am using a normal unix terminal
user
To check if you have Blender properly installed from the command line in a Unix terminal, you can try running the blender command with the -v or --version option. Here's an example command:

blender -v

This will output the version of Blender that is currently installed on your system. If Blender is properly installed and in your system's PATH, you should see something like:

Blender 2.93.4

If Blender is not installed or not properly configured, you may see an error message instead.
assistant