A modular door operating linkage system connectable to an extendable from a door pivotable between closed and open positions about a generally vertical axis disposed such that the door can be either pushed or pulled between positions. The modular linkage system includes a rigid generally L-shaped crank arm component connected to a powered driver which drives the crank arm component in opposite arcuate directions. The modular linkage system also includes a rigid elongated track component defining a generally C-shaped linear channel. The modular linkage system also includes a rigid but adjustable multipiece link component. The linkage system further includes a rigid block component which is configured and designed to act in concert with the other components of the linkage system. The various components of the linkage system are designed and configured relative to each other such that they can be selectively interchanged with and connected to each other and to the door in a multitude of different arrangements and scenarios to easily and readily accommodate different environments wherein the door is utilized. A method for connecting a door to a powered driver is also disclosed.