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file(1) [bsd man page]

FILE(1) 						      General Commands Manual							   FILE(1)

NAME
file - determine file type SYNOPSIS
file file ... DESCRIPTION
File performs a series of tests on each argument in an attempt to classify it. If an argument appears to be ascii, file examines the first 512 bytes and tries to guess its language. BUGS
It often makes mistakes. In particular it often suggests that command files are C programs. Does not recognize Pascal or LISP. 7th Edition April 29, 1985 FILE(1)

Check Out this Related Man Page

PUTC(3S)																  PUTC(3S)

NAME
putc, putchar, fputc, putw - put character or word on a stream SYNOPSIS
#include <stdio.h> int putc(c, stream) char c; FILE *stream; int putchar(c) int fputc(c, stream) FILE *stream; int putw(w, stream) FILE *stream; DESCRIPTION
Putc appends the character c to the named output stream. It returns the character written. Putchar(c) is defined as putc(c, stdout). Fputc behaves like putc, but is a genuine function rather than a macro. Putw appends word (that is, int) w to the output stream. It returns the word written. Putw neither assumes nor causes special alignment in the file. SEE ALSO
fopen(3S), fclose(3S), getc(3S), puts(3S), printf(3S), fread(3S) DIAGNOSTICS
These functions return the constant EOF upon error. Since this is a good integer, ferror(3S) should be used to detect putw errors. BUGS
Because it is implemented as a macro, putc treats a stream argument with side effects improperly. In particular putc(c, *f++); doesn't work sensibly. Errors can occur long after the call to putc. 7th Edition November 6, 1985 PUTC(3S)

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