To execute an external system command in the Active-HDL console, the command should be preceded by the exclamation point symbol (!)
!dir //This will list the contents of the current directory
! mkdir <folder_name> //creates a new folder in the current/specified directory
In the Tcl and Compatibility modes, the use of the exclamation point symbol(!) is not allowed.
The exclamation point symbol (!) cannot be used to run interactive commands such as time
It does not matter if there is a space between the '!' and the command. Both ways will work.