.TH FILE 1 .CT 1 files .SH NAME file \(mi determine file type .SH SYNOPSIS .B file .I file ... .PP .B file .B -f .I names .SH DESCRIPTION .I File performs a series of tests on a set of files in an attempt to classify their contents by language or purpose. The names may be enumerated or contained in the file specified by the .B -f option. .SH BUGS It can make mistakes, for example classifying a file of decimal data, .LR .01 , .LR .02 , etc. as .IR troff (1) input.