How do I get this tcl script to run?

Yea, that usually doesn't apply when it comes to technology.

anyway, here is an adaptation of altera's code to search for every vhdl file in the folder to change the date, just in case someone in the future decides my vhdl file name is silly. Got the idea from a newsgroup post.

set strlist 
foreach strfile $strlist {
        set file_name $strfile
        set output_file_name ${file_name}.updated_version_number
        
       # date2hdl $file_name $output_file_name
        if {  } {
            post_message -type critical_warning "Could not update version number: $res"
        } else {
        
            if {  } {
                post_message -type critical_warning 
                    "Could not update version number: $res"
            }
        }
}