To provide a file operation controller with excellent operability capable of easily performing a file operation in a short time even in an information processor such as a portable information terminal or an electronic notebook provided with only a small display screen and a recording medium recording a file operation control program for making the file operation controller function.

This file operation controller is used for an operating system executable by a graphic conversation type processing and controls the file operation of the copying and movement, etc., of files. In such a case, it is provided with a file operation control part 14 provided with an instruction means 31 for selecting the file, an auxiliary input means 32 for displaying a file operation menu, an execution means 33 for executing an operation selected by the file operation menu and a file display means 34 for selecting a file system inside the operating system by the instruction means and displaying the contents of the file system successively by a hierarchical menu.