This command will copy the population with the specified ID to the planet that you currently have selected.
copy_pop [population id]
| Population ID | The ID of the population you wish to copy. |
copy_pop 45
The above command will copy the population with ID of 45 to the planet that is currently selected in your game.
copy_pop 463
After selecting the planet you wish to copy the population to, running this command would apply the population of the planet with ID 463 to it.