Block commands were a feature of the legacy toolset. They are no more.
In the modern toolset you have selections (which could be a single item, or could be multiple items). Commands act on selections.
So to do the equivalent of a block move, drag out a selection and hit the 'M' key.
To do the equivalent of a block drag, drag out a selection and hit the 'G' key.
To do the equivalent of a block duplicate, drag out a selection and hit <ctrl>D.
etc.
Block commands were a feature of the legacy toolset. They are no more.
In the modern toolset you have selections (which could be a single item, or could be multiple items). Commands act on selections.
So to do the equivalent of a block move, drag out a selection and hit the 'M' key.
To do the equivalent of a block drag, drag out a selection and hit the 'G' key.
To do the equivalent of a block duplicate, drag out a selection and hit <ctrl>D.
etc.