SRFI-22: Running Scheme Scripts on Unix. Here is a Scheme version of the Unix cat utility:

#! /usr/bin/env scheme-r5rs

(define (main arguments)
(for-each display-file (cdr arguments))
0)

(define (display-file filename)
(call-with-input-file filename
(lambda (port)
(let loop ()
(let ((thing (read-char port)))
(if (not (eof-object? thing))
(begin
(write-char thing)
(loop))))))))

https://srfi.schemers.org/srfi-22/srfi-22.html