Hi @Jorma_Tuomainen,
@phillxnet already explained everything
For the record, on Rockstor 4.5.4-0 and later, these scripts should now be run under our Poetry env, and thus using the poetry run <script name>
format. In this case, it would thus be:
$ poetry run delete-rockon
Delete metadata, containers and images of a Rock-on
Usage: delete-rockon <rockon name>
Hope this helps,