#!/usr/bin/sbcl --script

(ql:quickload "uiop")
(ql:quickload "split-sequence")

;; (defvar *path* (uiop:getenv "PATH"))

;; (defun file-is-executable-p (file-path)
;;   (let ((oct-mode (mod (parse-integer (format NIL "~o" (sb-posix:stat-mode (sb-posix:stat file-path)))) 1000)))
;;     (if (> oct-mode 711) T NIL)))

(defun bins-list ()
  (apply #'append
	 (mapcar #'uiop:directory-files
		 (loop for path in (split-sequence:split-sequence #\: (uiop:getenv "PATH"))
		       collect (format NIL "~a~c" path #\/)))))

(defun random-bin (bins-list)
  (nth (random (length bins-list)) bins-list))

(defun random-cmd (bins-list)
  (let ((number-of-pipes (random 4))
	(cmd-str ""))
    (if (> number-of-pipes 0)
	(progn
	  (dotimes (i (+ 1 number-of-pipes))
	    (setf cmd-str (concatenate 'string cmd-str (format NIL "~A | " (random-bin bins-list)))))
	  (setf cmd-str (concatenate 'string (subseq cmd-str 0 (- (length cmd-str) 3)) (format NIL "~%"))))
	(setf cmd-str (concatenate 'string cmd-str (format NIL "~A~%" (random-bin bins-list)))))
    cmd-str))