The ismusnum program identifies binary SCORE files. SCORE binary files usually end in ".mus", but they can also be found with other extensions, such as ".pag" for explicitly indicating a full page of music, or ".pt" to indicate a instrumental part.

OPTIONS

ⓘ	-b		List only bad files (files which are not binary SCORE files).
ⓘ	-g		List only good files (files which are binary SCORE files).
ⓘ	-r		Recursively search all input directories for binary SCORE files.