Error:invalid command name "quartus_sh"

Where are you seeing that invalid command name error? When hitting compile and the pre_flow_script is run, or are you typing it into Quartus Tcl. It is not part of the Quartus Tcl console.

When you say there is no effect, what do you mean? I assume some_script.tcl exists in the project directory. When you compile, I believe there should be messages that it is running a script. Maybe add as the first line of your script something like:

post_message "some_script.tcl is running"

I'm attaching an example one I have lying around, although it's over ten years old, but I believe it should work.