* lisp/net/tramp-sh.el (tramp-set-remote-path): Handle platforms w/o getconf.

lisp/net/tramp-sh.el

@@ -3960,8 +3960,10 @@ variable PATH."
 	 (format "PATH=%s; export PATH"
 		 (mapconcat 'identity (tramp-get-remote-path vec) ":")))
 	(pipe-buf
-	 (with-tramp-connection-property vec "pipe-buf"
-	   (tramp-send-command-and-read vec "getconf PIPE_BUF /")))
+	 (or (with-tramp-connection-property vec "pipe-buf"
+	       (tramp-send-command-and-read
+		vec "getconf PIPE_BUF / 2>/dev/null || echo nil" 'noerror))
+	     4096))
 	tmpfile)
     (tramp-message vec 5 "Setting $PATH environment variable")
     (if (< (length command) pipe-buf)